/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/elevator_spec9_product30.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-a10ec3b [2022-01-10 17:58:56,609 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-10 17:58:56,611 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-10 17:58:56,673 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-01-10 17:58:56,674 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-01-10 17:58:56,675 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-01-10 17:58:56,676 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-01-10 17:58:56,678 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-01-10 17:58:56,680 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-01-10 17:58:56,680 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-01-10 17:58:56,681 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-01-10 17:58:56,686 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-01-10 17:58:56,687 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-10 17:58:56,688 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-10 17:58:56,689 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-10 17:58:56,690 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-10 17:58:56,690 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-10 17:58:56,691 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-10 17:58:56,693 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-10 17:58:56,694 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-10 17:58:56,695 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-10 17:58:56,697 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-10 17:58:56,698 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-10 17:58:56,698 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-10 17:58:56,701 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-01-10 17:58:56,701 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-01-10 17:58:56,701 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-01-10 17:58:56,702 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-01-10 17:58:56,703 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-01-10 17:58:56,704 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-01-10 17:58:56,704 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-01-10 17:58:56,705 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-01-10 17:58:56,705 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-01-10 17:58:56,706 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-01-10 17:58:56,707 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-01-10 17:58:56,707 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-01-10 17:58:56,708 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-01-10 17:58:56,708 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-01-10 17:58:56,708 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-10 17:58:56,709 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-10 17:58:56,710 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-10 17:58:56,711 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 17:58:56,732 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-10 17:58:56,733 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-10 17:58:56,733 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-10 17:58:56,733 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-10 17:58:56,734 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-10 17:58:56,734 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-10 17:58:56,734 INFO L138 SettingsManager]: * Use SBE=true [2022-01-10 17:58:56,735 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-10 17:58:56,735 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-10 17:58:56,737 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-10 17:58:56,737 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-10 17:58:56,738 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-10 17:58:56,738 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-10 17:58:56,738 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-01-10 17:58:56,738 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-01-10 17:58:56,742 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-01-10 17:58:56,742 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-10 17:58:56,742 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-10 17:58:56,743 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-10 17:58:56,743 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-10 17:58:56,743 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-10 17:58:56,743 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 17:58:56,743 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-10 17:58:56,743 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-10 17:58:56,743 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-10 17:58:56,743 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-10 17:58:56,744 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-01-10 17:58:56,744 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-10 17:58:56,744 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-10 17:58:56,744 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-10 17:58:56,744 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-01-10 17:58:56,744 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-01-10 17:58:56,745 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-01-10 17:58:56,745 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-10 17:58:56,942 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-10 17:58:56,964 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-10 17:58:56,966 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-10 17:58:56,967 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-10 17:58:56,969 INFO L275 PluginConnector]: CDTParser initialized [2022-01-10 17:58:56,971 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/elevator_spec9_product30.cil.c [2022-01-10 17:58:57,036 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7d1e4aa82/79e526f6c90f4c4bb146ab41de0ae8c0/FLAGac192d500 [2022-01-10 17:58:57,549 INFO L306 CDTParser]: Found 1 translation units. [2022-01-10 17:58:57,550 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/elevator_spec9_product30.cil.c [2022-01-10 17:58:57,569 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7d1e4aa82/79e526f6c90f4c4bb146ab41de0ae8c0/FLAGac192d500 [2022-01-10 17:58:58,005 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7d1e4aa82/79e526f6c90f4c4bb146ab41de0ae8c0 [2022-01-10 17:58:58,008 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-10 17:58:58,010 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-01-10 17:58:58,011 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-10 17:58:58,011 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-10 17:58:58,014 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-10 17:58:58,014 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 05:58:58" (1/1) ... [2022-01-10 17:58:58,015 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@164cb86 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 05:58:58, skipping insertion in model container [2022-01-10 17:58:58,016 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 05:58:58" (1/1) ... [2022-01-10 17:58:58,021 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-10 17:58:58,084 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-10 17:58:58,404 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/product-lines/elevator_spec9_product30.cil.c[11768,11781] [2022-01-10 17:58:58,632 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 17:58:58,646 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2022-01-10 17:58:58,665 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-10 17:58:58,703 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/elevator_spec9_product30.cil.c[11768,11781] [2022-01-10 17:58:58,792 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 17:58:58,800 INFO L203 MainTranslator]: Completed pre-run [2022-01-10 17:58:58,824 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/elevator_spec9_product30.cil.c[11768,11781] [2022-01-10 17:58:58,861 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 17:58:58,893 INFO L208 MainTranslator]: Completed translation [2022-01-10 17:58:58,893 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 05:58:58 WrapperNode [2022-01-10 17:58:58,893 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-10 17:58:58,895 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-10 17:58:58,895 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-10 17:58:58,895 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-10 17:58:58,902 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 05:58:58" (1/1) ... [2022-01-10 17:58:58,928 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 05:58:58" (1/1) ... [2022-01-10 17:58:59,194 INFO L137 Inliner]: procedures = 97, calls = 344, calls flagged for inlining = 196, calls inlined = 776, statements flattened = 26409 [2022-01-10 17:58:59,195 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-10 17:58:59,196 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-10 17:58:59,196 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-10 17:58:59,196 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-10 17:58:59,204 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 05:58:58" (1/1) ... [2022-01-10 17:58:59,205 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 05:58:58" (1/1) ... [2022-01-10 17:58:59,273 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 05:58:58" (1/1) ... [2022-01-10 17:58:59,273 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 05:58:58" (1/1) ... [2022-01-10 17:58:59,509 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 05:58:58" (1/1) ... [2022-01-10 17:58:59,754 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 05:58:58" (1/1) ... [2022-01-10 17:58:59,793 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 05:58:58" (1/1) ... [2022-01-10 17:58:59,875 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-10 17:58:59,877 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-10 17:58:59,877 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-10 17:58:59,878 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-10 17:58:59,879 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 05:58:58" (1/1) ... [2022-01-10 17:58:59,886 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 17:58:59,896 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 17:58:59,913 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 17:58:59,940 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 17:58:59,962 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-10 17:58:59,963 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-01-10 17:58:59,963 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-10 17:58:59,963 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-10 17:59:00,179 INFO L234 CfgBuilder]: Building ICFG [2022-01-10 17:59:00,181 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-10 17:59:09,852 INFO L275 CfgBuilder]: Performing block encoding [2022-01-10 17:59:09,911 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-10 17:59:09,912 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-01-10 17:59:09,921 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 05:59:09 BoogieIcfgContainer [2022-01-10 17:59:09,922 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-10 17:59:09,923 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2022-01-10 17:59:09,923 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2022-01-10 17:59:09,924 INFO L275 PluginConnector]: IcfgTransformer initialized [2022-01-10 17:59:09,927 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 05:59:09" (1/1) ... [2022-01-10 17:59:11,923 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 10.01 05:59:11 BasicIcfg [2022-01-10 17:59:11,923 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2022-01-10 17:59:11,926 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-10 17:59:11,927 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-10 17:59:11,929 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-10 17:59:11,929 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.01 05:58:58" (1/4) ... [2022-01-10 17:59:11,930 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@62698fc3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 05:59:11, skipping insertion in model container [2022-01-10 17:59:11,930 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 05:58:58" (2/4) ... [2022-01-10 17:59:11,930 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@62698fc3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 05:59:11, skipping insertion in model container [2022-01-10 17:59:11,930 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 05:59:09" (3/4) ... [2022-01-10 17:59:11,931 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@62698fc3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.01 05:59:11, skipping insertion in model container [2022-01-10 17:59:11,931 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 10.01 05:59:11" (4/4) ... [2022-01-10 17:59:11,932 INFO L111 eAbstractionObserver]: Analyzing ICFG elevator_spec9_product30.cil.cTransformedIcfg [2022-01-10 17:59:11,937 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-10 17:59:11,937 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 5 error locations. [2022-01-10 17:59:12,007 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-10 17:59:12,018 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 17:59:12,018 INFO L340 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2022-01-10 17:59:12,131 INFO L276 IsEmpty]: Start isEmpty. Operand has 7102 states, 7096 states have (on average 1.878382187147689) internal successors, (13329), 7101 states have internal predecessors, (13329), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 17:59:12,146 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2022-01-10 17:59:12,146 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 17:59:12,147 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 17:59:12,147 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-01-10 17:59:12,155 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 17:59:12,156 INFO L85 PathProgramCache]: Analyzing trace with hash -852717108, now seen corresponding path program 1 times [2022-01-10 17:59:12,163 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 17:59:12,163 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1516261184] [2022-01-10 17:59:12,164 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 17:59:12,164 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 17:59:12,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 17:59:12,578 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 17:59:12,578 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 17:59:12,579 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1516261184] [2022-01-10 17:59:12,579 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1516261184] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 17:59:12,579 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 17:59:12,579 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 17:59:12,581 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1342922502] [2022-01-10 17:59:12,581 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 17:59:12,585 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 17:59:12,585 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 17:59:12,641 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 17:59:12,642 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 17:59:12,679 INFO L87 Difference]: Start difference. First operand has 7102 states, 7096 states have (on average 1.878382187147689) internal successors, (13329), 7101 states have internal predecessors, (13329), 0 states have call successors, (0), 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 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 17:59:13,054 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 17:59:13,054 INFO L93 Difference]: Finished difference Result 14189 states and 26635 transitions. [2022-01-10 17:59:13,056 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 17:59:13,057 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 0 states have call successors, (0), 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 32 [2022-01-10 17:59:13,057 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 17:59:13,118 INFO L225 Difference]: With dead ends: 14189 [2022-01-10 17:59:13,119 INFO L226 Difference]: Without dead ends: 7091 [2022-01-10 17:59:13,145 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 17:59:13,150 INFO L933 BasicCegarLoop]: 13308 mSDtfsCounter, 13303 mSDsluCounter, 11 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13303 SdHoareTripleChecker+Valid, 13319 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 17:59:13,152 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [13303 Valid, 13319 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 17:59:13,182 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7091 states. [2022-01-10 17:59:13,548 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7091 to 7091. [2022-01-10 17:59:13,568 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7091 states, 7086 states have (on average 1.8776460626587637) internal successors, (13305), 7090 states have internal predecessors, (13305), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 17:59:13,595 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7091 states to 7091 states and 13305 transitions. [2022-01-10 17:59:13,596 INFO L78 Accepts]: Start accepts. Automaton has 7091 states and 13305 transitions. Word has length 32 [2022-01-10 17:59:13,597 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 17:59:13,597 INFO L470 AbstractCegarLoop]: Abstraction has 7091 states and 13305 transitions. [2022-01-10 17:59:13,597 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 17:59:13,597 INFO L276 IsEmpty]: Start isEmpty. Operand 7091 states and 13305 transitions. [2022-01-10 17:59:13,599 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2022-01-10 17:59:13,599 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 17:59:13,600 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] [2022-01-10 17:59:13,600 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-10 17:59:13,600 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-01-10 17:59:13,601 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 17:59:13,601 INFO L85 PathProgramCache]: Analyzing trace with hash 1456490975, now seen corresponding path program 1 times [2022-01-10 17:59:13,601 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 17:59:13,601 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [117711972] [2022-01-10 17:59:13,602 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 17:59:13,602 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 17:59:13,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 17:59:13,717 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 17:59:13,718 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 17:59:13,718 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [117711972] [2022-01-10 17:59:13,718 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [117711972] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 17:59:13,719 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 17:59:13,719 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 17:59:13,720 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [627622543] [2022-01-10 17:59:13,720 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 17:59:13,723 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 17:59:13,724 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 17:59:13,725 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 17:59:13,728 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 17:59:13,729 INFO L87 Difference]: Start difference. First operand 7091 states and 13305 transitions. Second operand has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 17:59:14,128 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 17:59:14,128 INFO L93 Difference]: Finished difference Result 14132 states and 26524 transitions. [2022-01-10 17:59:14,129 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 17:59:14,129 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 0 states have call successors, (0), 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 39 [2022-01-10 17:59:14,129 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 17:59:14,166 INFO L225 Difference]: With dead ends: 14132 [2022-01-10 17:59:14,167 INFO L226 Difference]: Without dead ends: 7091 [2022-01-10 17:59:14,181 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 17:59:14,182 INFO L933 BasicCegarLoop]: 13245 mSDtfsCounter, 13263 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13263 SdHoareTripleChecker+Valid, 13260 SdHoareTripleChecker+Invalid, 59 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 17:59:14,183 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [13263 Valid, 13260 Invalid, 59 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 17:59:14,200 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7091 states. [2022-01-10 17:59:14,382 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7091 to 7091. [2022-01-10 17:59:14,406 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7091 states, 7086 states have (on average 1.8741179791137454) internal successors, (13280), 7090 states have internal predecessors, (13280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 17:59:14,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7091 states to 7091 states and 13280 transitions. [2022-01-10 17:59:14,437 INFO L78 Accepts]: Start accepts. Automaton has 7091 states and 13280 transitions. Word has length 39 [2022-01-10 17:59:14,438 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 17:59:14,438 INFO L470 AbstractCegarLoop]: Abstraction has 7091 states and 13280 transitions. [2022-01-10 17:59:14,440 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 17:59:14,443 INFO L276 IsEmpty]: Start isEmpty. Operand 7091 states and 13280 transitions. [2022-01-10 17:59:14,446 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2022-01-10 17:59:14,446 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 17:59:14,446 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] [2022-01-10 17:59:14,446 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-01-10 17:59:14,447 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-01-10 17:59:14,447 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 17:59:14,447 INFO L85 PathProgramCache]: Analyzing trace with hash -434458216, now seen corresponding path program 1 times [2022-01-10 17:59:14,448 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 17:59:14,448 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1759300864] [2022-01-10 17:59:14,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 17:59:14,448 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 17:59:14,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 17:59:14,528 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 17:59:14,529 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 17:59:14,529 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1759300864] [2022-01-10 17:59:14,529 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1759300864] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 17:59:14,530 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 17:59:14,530 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 17:59:14,530 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1156323526] [2022-01-10 17:59:14,530 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 17:59:14,531 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 17:59:14,531 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 17:59:14,531 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 17:59:14,532 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 17:59:14,532 INFO L87 Difference]: Start difference. First operand 7091 states and 13280 transitions. Second operand has 3 states, 3 states have (on average 14.0) internal successors, (42), 2 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 17:59:15,288 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 17:59:15,288 INFO L93 Difference]: Finished difference Result 17169 states and 32188 transitions. [2022-01-10 17:59:15,289 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 17:59:15,289 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.0) internal successors, (42), 2 states have internal predecessors, (42), 0 states have call successors, (0), 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 42 [2022-01-10 17:59:15,289 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 17:59:15,350 INFO L225 Difference]: With dead ends: 17169 [2022-01-10 17:59:15,350 INFO L226 Difference]: Without dead ends: 11780 [2022-01-10 17:59:15,364 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 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 17:59:15,368 INFO L933 BasicCegarLoop]: 13484 mSDtfsCounter, 13008 mSDsluCounter, 8910 mSDsCounter, 0 mSdLazyCounter, 82 mSolverCounterSat, 61 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13008 SdHoareTripleChecker+Valid, 22394 SdHoareTripleChecker+Invalid, 143 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 61 IncrementalHoareTripleChecker+Valid, 82 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-10 17:59:15,369 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [13008 Valid, 22394 Invalid, 143 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [61 Valid, 82 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-10 17:59:15,390 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11780 states. [2022-01-10 17:59:15,707 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11780 to 11763. [2022-01-10 17:59:15,738 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11763 states, 11758 states have (on average 1.874638543970063) internal successors, (22042), 11762 states have internal predecessors, (22042), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 17:59:15,903 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11763 states to 11763 states and 22042 transitions. [2022-01-10 17:59:15,904 INFO L78 Accepts]: Start accepts. Automaton has 11763 states and 22042 transitions. Word has length 42 [2022-01-10 17:59:15,904 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 17:59:15,904 INFO L470 AbstractCegarLoop]: Abstraction has 11763 states and 22042 transitions. [2022-01-10 17:59:15,904 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.0) internal successors, (42), 2 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 17:59:15,905 INFO L276 IsEmpty]: Start isEmpty. Operand 11763 states and 22042 transitions. [2022-01-10 17:59:15,906 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2022-01-10 17:59:15,906 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 17:59:15,907 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 17:59:15,907 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-01-10 17:59:15,907 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-01-10 17:59:15,908 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 17:59:15,908 INFO L85 PathProgramCache]: Analyzing trace with hash 396713216, now seen corresponding path program 1 times [2022-01-10 17:59:15,908 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 17:59:15,908 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1052886329] [2022-01-10 17:59:15,908 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 17:59:15,909 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 17:59:15,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 17:59:16,004 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 17:59:16,004 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 17:59:16,004 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1052886329] [2022-01-10 17:59:16,005 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1052886329] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 17:59:16,005 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 17:59:16,005 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 17:59:16,005 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [141673191] [2022-01-10 17:59:16,005 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 17:59:16,005 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 17:59:16,006 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 17:59:16,006 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 17:59:16,006 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 17:59:16,006 INFO L87 Difference]: Start difference. First operand 11763 states and 22042 transitions. Second operand has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 2 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 17:59:16,773 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 17:59:16,773 INFO L93 Difference]: Finished difference Result 30987 states and 58108 transitions. [2022-01-10 17:59:16,773 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 17:59:16,774 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 2 states have internal predecessors, (43), 0 states have call successors, (0), 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 43 [2022-01-10 17:59:16,774 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 17:59:16,839 INFO L225 Difference]: With dead ends: 30987 [2022-01-10 17:59:16,839 INFO L226 Difference]: Without dead ends: 20928 [2022-01-10 17:59:16,861 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 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 17:59:16,868 INFO L933 BasicCegarLoop]: 13060 mSDtfsCounter, 12885 mSDsluCounter, 8910 mSDsCounter, 0 mSdLazyCounter, 80 mSolverCounterSat, 57 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12885 SdHoareTripleChecker+Valid, 21970 SdHoareTripleChecker+Invalid, 137 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 57 IncrementalHoareTripleChecker+Valid, 80 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-10 17:59:16,869 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [12885 Valid, 21970 Invalid, 137 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [57 Valid, 80 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-10 17:59:16,898 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20928 states. [2022-01-10 17:59:17,428 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20928 to 20911. [2022-01-10 17:59:17,468 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20911 states, 20906 states have (on average 1.8744857935520902) internal successors, (39188), 20910 states have internal predecessors, (39188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 17:59:17,567 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20911 states to 20911 states and 39188 transitions. [2022-01-10 17:59:17,568 INFO L78 Accepts]: Start accepts. Automaton has 20911 states and 39188 transitions. Word has length 43 [2022-01-10 17:59:17,569 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 17:59:17,569 INFO L470 AbstractCegarLoop]: Abstraction has 20911 states and 39188 transitions. [2022-01-10 17:59:17,569 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 2 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 17:59:17,569 INFO L276 IsEmpty]: Start isEmpty. Operand 20911 states and 39188 transitions. [2022-01-10 17:59:17,570 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2022-01-10 17:59:17,571 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 17:59:17,571 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] [2022-01-10 17:59:17,571 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-01-10 17:59:17,571 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-01-10 17:59:17,572 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 17:59:17,572 INFO L85 PathProgramCache]: Analyzing trace with hash -1449171803, now seen corresponding path program 1 times [2022-01-10 17:59:17,573 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 17:59:17,573 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1314664621] [2022-01-10 17:59:17,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 17:59:17,573 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 17:59:17,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 17:59:17,643 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 17:59:17,644 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 17:59:17,644 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1314664621] [2022-01-10 17:59:17,644 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1314664621] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 17:59:17,644 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 17:59:17,644 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 17:59:17,644 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1172848947] [2022-01-10 17:59:17,645 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 17:59:17,645 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 17:59:17,645 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 17:59:17,645 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 17:59:17,645 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 17:59:17,646 INFO L87 Difference]: Start difference. First operand 20911 states and 39188 transitions. Second operand has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 2 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 17:59:18,673 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 17:59:18,674 INFO L93 Difference]: Finished difference Result 57973 states and 108682 transitions. [2022-01-10 17:59:18,674 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 17:59:18,675 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 2 states have internal predecessors, (44), 0 states have call successors, (0), 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 44 [2022-01-10 17:59:18,676 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 17:59:18,789 INFO L225 Difference]: With dead ends: 57973 [2022-01-10 17:59:18,790 INFO L226 Difference]: Without dead ends: 38768 [2022-01-10 17:59:18,832 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 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 17:59:18,833 INFO L933 BasicCegarLoop]: 12944 mSDtfsCounter, 12766 mSDsluCounter, 8910 mSDsCounter, 0 mSdLazyCounter, 78 mSolverCounterSat, 53 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12766 SdHoareTripleChecker+Valid, 21854 SdHoareTripleChecker+Invalid, 131 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 53 IncrementalHoareTripleChecker+Valid, 78 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 17:59:18,833 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [12766 Valid, 21854 Invalid, 131 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [53 Valid, 78 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 17:59:18,877 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38768 states. [2022-01-10 17:59:19,842 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38768 to 38751. [2022-01-10 17:59:19,908 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38751 states, 38746 states have (on average 1.8734320962163837) internal successors, (72588), 38750 states have internal predecessors, (72588), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 17:59:20,028 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38751 states to 38751 states and 72588 transitions. [2022-01-10 17:59:20,029 INFO L78 Accepts]: Start accepts. Automaton has 38751 states and 72588 transitions. Word has length 44 [2022-01-10 17:59:20,029 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 17:59:20,034 INFO L470 AbstractCegarLoop]: Abstraction has 38751 states and 72588 transitions. [2022-01-10 17:59:20,034 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 2 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 17:59:20,035 INFO L276 IsEmpty]: Start isEmpty. Operand 38751 states and 72588 transitions. [2022-01-10 17:59:20,036 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2022-01-10 17:59:20,036 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 17:59:20,036 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] [2022-01-10 17:59:20,037 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-01-10 17:59:20,037 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-01-10 17:59:20,037 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 17:59:20,037 INFO L85 PathProgramCache]: Analyzing trace with hash -126295445, now seen corresponding path program 1 times [2022-01-10 17:59:20,038 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 17:59:20,038 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1275791935] [2022-01-10 17:59:20,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 17:59:20,038 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 17:59:20,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 17:59:20,102 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 17:59:20,103 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 17:59:20,103 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1275791935] [2022-01-10 17:59:20,103 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1275791935] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 17:59:20,103 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 17:59:20,103 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 17:59:20,103 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [769321469] [2022-01-10 17:59:20,103 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 17:59:20,104 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 17:59:20,104 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 17:59:20,104 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 17:59:20,104 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 17:59:20,105 INFO L87 Difference]: Start difference. First operand 38751 states and 72588 transitions. Second operand has 3 states, 3 states have (on average 15.0) internal successors, (45), 2 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 17:59:21,685 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 17:59:21,685 INFO L93 Difference]: Finished difference Result 110515 states and 207026 transitions. [2022-01-10 17:59:21,686 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 17:59:21,686 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.0) internal successors, (45), 2 states have internal predecessors, (45), 0 states have call successors, (0), 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 45 [2022-01-10 17:59:21,686 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 17:59:21,924 INFO L225 Difference]: With dead ends: 110515 [2022-01-10 17:59:21,924 INFO L226 Difference]: Without dead ends: 73472 [2022-01-10 17:59:21,976 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 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 17:59:21,976 INFO L933 BasicCegarLoop]: 12830 mSDtfsCounter, 12651 mSDsluCounter, 8910 mSDsCounter, 0 mSdLazyCounter, 76 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12651 SdHoareTripleChecker+Valid, 21740 SdHoareTripleChecker+Invalid, 125 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 76 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 17:59:21,977 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [12651 Valid, 21740 Invalid, 125 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 76 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 17:59:22,064 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73472 states. [2022-01-10 17:59:23,517 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73472 to 73455. [2022-01-10 17:59:23,611 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 73455 states, 73450 states have (on average 1.871640571817563) internal successors, (137472), 73454 states have internal predecessors, (137472), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 17:59:24,015 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73455 states to 73455 states and 137472 transitions. [2022-01-10 17:59:24,015 INFO L78 Accepts]: Start accepts. Automaton has 73455 states and 137472 transitions. Word has length 45 [2022-01-10 17:59:24,017 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 17:59:24,024 INFO L470 AbstractCegarLoop]: Abstraction has 73455 states and 137472 transitions. [2022-01-10 17:59:24,024 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.0) internal successors, (45), 2 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 17:59:24,025 INFO L276 IsEmpty]: Start isEmpty. Operand 73455 states and 137472 transitions. [2022-01-10 17:59:24,033 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2022-01-10 17:59:24,033 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 17:59:24,034 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] [2022-01-10 17:59:24,034 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-01-10 17:59:24,034 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-01-10 17:59:24,035 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 17:59:24,035 INFO L85 PathProgramCache]: Analyzing trace with hash 1031183949, now seen corresponding path program 1 times [2022-01-10 17:59:24,035 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 17:59:24,035 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1101299484] [2022-01-10 17:59:24,035 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 17:59:24,035 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 17:59:24,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 17:59:24,097 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 17:59:24,098 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 17:59:24,098 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1101299484] [2022-01-10 17:59:24,098 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1101299484] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 17:59:24,098 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 17:59:24,098 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 17:59:24,098 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [185749305] [2022-01-10 17:59:24,098 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 17:59:24,099 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 17:59:24,100 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 17:59:24,100 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 17:59:24,100 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 17:59:24,100 INFO L87 Difference]: Start difference. First operand 73455 states and 137472 transitions. Second operand has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 2 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 17:59:26,487 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 17:59:26,487 INFO L93 Difference]: Finished difference Result 212609 states and 397842 transitions. [2022-01-10 17:59:26,488 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 17:59:26,488 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 2 states have internal predecessors, (46), 0 states have call successors, (0), 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 46 [2022-01-10 17:59:26,488 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 17:59:26,821 INFO L225 Difference]: With dead ends: 212609 [2022-01-10 17:59:26,822 INFO L226 Difference]: Without dead ends: 140864 [2022-01-10 17:59:27,071 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 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 17:59:27,073 INFO L933 BasicCegarLoop]: 12720 mSDtfsCounter, 12540 mSDsluCounter, 8910 mSDsCounter, 0 mSdLazyCounter, 74 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12540 SdHoareTripleChecker+Valid, 21630 SdHoareTripleChecker+Invalid, 119 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 74 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-10 17:59:27,073 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [12540 Valid, 21630 Invalid, 119 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [45 Valid, 74 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-10 17:59:27,206 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140864 states. [2022-01-10 17:59:29,519 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140864 to 140847. [2022-01-10 17:59:29,825 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 140847 states, 140842 states have (on average 1.8693287513667798) internal successors, (263280), 140846 states have internal predecessors, (263280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 17:59:30,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140847 states to 140847 states and 263280 transitions. [2022-01-10 17:59:30,189 INFO L78 Accepts]: Start accepts. Automaton has 140847 states and 263280 transitions. Word has length 46 [2022-01-10 17:59:30,189 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 17:59:30,189 INFO L470 AbstractCegarLoop]: Abstraction has 140847 states and 263280 transitions. [2022-01-10 17:59:30,189 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 2 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 17:59:30,190 INFO L276 IsEmpty]: Start isEmpty. Operand 140847 states and 263280 transitions. [2022-01-10 17:59:30,191 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2022-01-10 17:59:30,191 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 17:59:30,191 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] [2022-01-10 17:59:30,191 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-01-10 17:59:30,191 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-01-10 17:59:30,192 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 17:59:30,192 INFO L85 PathProgramCache]: Analyzing trace with hash 1356324755, now seen corresponding path program 1 times [2022-01-10 17:59:30,192 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 17:59:30,192 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [669142296] [2022-01-10 17:59:30,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 17:59:30,192 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 17:59:30,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 17:59:30,248 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 17:59:30,249 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 17:59:30,249 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [669142296] [2022-01-10 17:59:30,249 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [669142296] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 17:59:30,249 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 17:59:30,249 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 17:59:30,249 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1283536698] [2022-01-10 17:59:30,249 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 17:59:30,250 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 17:59:30,250 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 17:59:30,250 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 17:59:30,250 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 17:59:30,250 INFO L87 Difference]: Start difference. First operand 140847 states and 263280 transitions. Second operand has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 2 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 17:59:34,916 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 17:59:34,917 INFO L93 Difference]: Finished difference Result 410687 states and 767474 transitions. [2022-01-10 17:59:34,917 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 17:59:34,917 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 2 states have internal predecessors, (47), 0 states have call successors, (0), 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 47 [2022-01-10 17:59:34,917 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 17:59:35,532 INFO L225 Difference]: With dead ends: 410687 [2022-01-10 17:59:35,533 INFO L226 Difference]: Without dead ends: 271552 [2022-01-10 17:59:35,663 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 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 17:59:35,664 INFO L933 BasicCegarLoop]: 12614 mSDtfsCounter, 12433 mSDsluCounter, 8910 mSDsCounter, 0 mSdLazyCounter, 72 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12433 SdHoareTripleChecker+Valid, 21524 SdHoareTripleChecker+Invalid, 113 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 72 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 17:59:35,664 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [12433 Valid, 21524 Invalid, 113 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 72 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 17:59:35,893 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 271552 states. [2022-01-10 17:59:40,645 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 271552 to 271535. [2022-01-10 17:59:40,980 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 271535 states, 271530 states have (on average 1.8666519353294295) internal successors, (506852), 271534 states have internal predecessors, (506852), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 17:59:42,155 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 271535 states to 271535 states and 506852 transitions. [2022-01-10 17:59:42,156 INFO L78 Accepts]: Start accepts. Automaton has 271535 states and 506852 transitions. Word has length 47 [2022-01-10 17:59:42,156 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 17:59:42,156 INFO L470 AbstractCegarLoop]: Abstraction has 271535 states and 506852 transitions. [2022-01-10 17:59:42,156 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 2 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 17:59:42,156 INFO L276 IsEmpty]: Start isEmpty. Operand 271535 states and 506852 transitions. [2022-01-10 17:59:42,158 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2022-01-10 17:59:42,158 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 17:59:42,158 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] [2022-01-10 17:59:42,158 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-01-10 17:59:42,158 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-01-10 17:59:42,158 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 17:59:42,158 INFO L85 PathProgramCache]: Analyzing trace with hash 1485407474, now seen corresponding path program 1 times [2022-01-10 17:59:42,159 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 17:59:42,159 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2082412099] [2022-01-10 17:59:42,159 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 17:59:42,159 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 17:59:42,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 17:59:42,208 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 17:59:42,208 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 17:59:42,208 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2082412099] [2022-01-10 17:59:42,208 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2082412099] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 17:59:42,208 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 17:59:42,208 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 17:59:42,208 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [463101347] [2022-01-10 17:59:42,209 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 17:59:42,209 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 17:59:42,209 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 17:59:42,209 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 17:59:42,209 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 17:59:42,210 INFO L87 Difference]: Start difference. First operand 271535 states and 506852 transitions. Second operand has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)