/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data --core.log.level.for.class de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN -tc ../../../trunk/examples/toolchains/AutomizerCInlineTransformed.xml -s ../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_BvToInt_LAZY.epf -i ../../../trunk/examples/svcomp/product-lines/email_spec3_product18.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-a10ec3b [2022-01-10 18:04:52,861 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-10 18:04:52,863 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-10 18:04:52,924 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-01-10 18:04:52,925 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-01-10 18:04:52,926 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-01-10 18:04:52,926 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-01-10 18:04:52,928 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-01-10 18:04:52,929 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-01-10 18:04:52,929 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-01-10 18:04:52,930 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-01-10 18:04:52,930 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-01-10 18:04:52,931 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-10 18:04:52,931 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-10 18:04:52,932 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-10 18:04:52,933 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-10 18:04:52,933 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-10 18:04:52,934 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-10 18:04:52,935 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-10 18:04:52,936 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-10 18:04:52,937 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-10 18:04:52,944 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-10 18:04:52,944 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-10 18:04:52,945 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-10 18:04:52,946 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-01-10 18:04:52,947 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-01-10 18:04:52,947 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-01-10 18:04:52,947 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-01-10 18:04:52,948 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-01-10 18:04:52,948 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-01-10 18:04:52,948 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-01-10 18:04:52,949 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-01-10 18:04:52,949 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-01-10 18:04:52,950 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-01-10 18:04:52,950 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-01-10 18:04:52,950 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-01-10 18:04:52,951 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-01-10 18:04:52,951 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-01-10 18:04:52,951 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-10 18:04:52,952 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-10 18:04:52,953 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-10 18:04:52,956 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_BvToInt_LAZY.epf [2022-01-10 18:04:52,973 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-10 18:04:52,973 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-10 18:04:52,973 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-10 18:04:52,973 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-10 18:04:52,974 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-10 18:04:52,974 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-10 18:04:52,974 INFO L138 SettingsManager]: * Use SBE=true [2022-01-10 18:04:52,974 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-10 18:04:52,975 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-10 18:04:52,975 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-10 18:04:52,975 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-10 18:04:52,978 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-10 18:04:52,978 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-10 18:04:52,978 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-01-10 18:04:52,979 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-01-10 18:04:52,979 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-01-10 18:04:52,979 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-10 18:04:52,979 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-10 18:04:52,979 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-10 18:04:52,979 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-10 18:04:52,979 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-10 18:04:52,979 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 18:04:52,979 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-10 18:04:52,980 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-10 18:04:52,980 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-10 18:04:52,980 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-10 18:04:52,980 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-01-10 18:04:52,980 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-10 18:04:52,981 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-10 18:04:52,981 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-10 18:04:52,981 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-01-10 18:04:52,981 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-01-10 18:04:52,982 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-01-10 18:04:52,982 INFO L138 SettingsManager]: * TransformationType=BV_TO_INT_LAZY WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-10 18:04:53,140 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-10 18:04:53,165 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-10 18:04:53,167 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-10 18:04:53,168 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-10 18:04:53,168 INFO L275 PluginConnector]: CDTParser initialized [2022-01-10 18:04:53,169 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/email_spec3_product18.cil.c [2022-01-10 18:04:53,226 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fd411a7f4/67f8fd73026047b9a1b8ba25088dffaa/FLAGd1719f428 [2022-01-10 18:04:53,678 INFO L306 CDTParser]: Found 1 translation units. [2022-01-10 18:04:53,678 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/email_spec3_product18.cil.c [2022-01-10 18:04:53,697 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fd411a7f4/67f8fd73026047b9a1b8ba25088dffaa/FLAGd1719f428 [2022-01-10 18:04:53,707 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fd411a7f4/67f8fd73026047b9a1b8ba25088dffaa [2022-01-10 18:04:53,709 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-10 18:04:53,709 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-01-10 18:04:53,710 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-10 18:04:53,710 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-10 18:04:53,719 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-10 18:04:53,719 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 06:04:53" (1/1) ... [2022-01-10 18:04:53,720 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6f6386a0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:04:53, skipping insertion in model container [2022-01-10 18:04:53,720 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 06:04:53" (1/1) ... [2022-01-10 18:04:53,724 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-10 18:04:53,780 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-10 18:04:54,090 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/product-lines/email_spec3_product18.cil.c[42127,42140] [2022-01-10 18:04:54,135 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 18:04:54,149 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2022-01-10 18:04:54,161 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-10 18:04:54,211 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/product-lines/email_spec3_product18.cil.c[42127,42140] [2022-01-10 18:04:54,232 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 18:04:54,239 INFO L203 MainTranslator]: Completed pre-run [2022-01-10 18:04:54,285 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/product-lines/email_spec3_product18.cil.c[42127,42140] [2022-01-10 18:04:54,308 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 18:04:54,330 INFO L208 MainTranslator]: Completed translation [2022-01-10 18:04:54,331 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:04:54 WrapperNode [2022-01-10 18:04:54,331 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-10 18:04:54,332 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-10 18:04:54,332 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-10 18:04:54,332 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-10 18:04:54,336 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:04:54" (1/1) ... [2022-01-10 18:04:54,364 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:04:54" (1/1) ... [2022-01-10 18:04:54,423 INFO L137 Inliner]: procedures = 130, calls = 208, calls flagged for inlining = 117, calls inlined = 141, statements flattened = 2123 [2022-01-10 18:04:54,423 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-10 18:04:54,424 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-10 18:04:54,424 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-10 18:04:54,424 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-10 18:04:54,430 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:04:54" (1/1) ... [2022-01-10 18:04:54,430 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:04:54" (1/1) ... [2022-01-10 18:04:54,437 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:04:54" (1/1) ... [2022-01-10 18:04:54,437 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:04:54" (1/1) ... [2022-01-10 18:04:54,465 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:04:54" (1/1) ... [2022-01-10 18:04:54,475 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:04:54" (1/1) ... [2022-01-10 18:04:54,478 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:04:54" (1/1) ... [2022-01-10 18:04:54,484 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-10 18:04:54,485 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-10 18:04:54,485 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-10 18:04:54,485 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-10 18:04:54,486 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:04:54" (1/1) ... [2022-01-10 18:04:54,516 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 18:04:54,526 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 18:04:54,538 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-01-10 18:04:54,540 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-01-10 18:04:54,565 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2022-01-10 18:04:54,566 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-10 18:04:54,566 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-01-10 18:04:54,566 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-10 18:04:54,566 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-10 18:04:54,799 INFO L234 CfgBuilder]: Building ICFG [2022-01-10 18:04:54,800 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-10 18:04:55,779 INFO L275 CfgBuilder]: Performing block encoding [2022-01-10 18:04:55,787 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-10 18:04:55,787 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-01-10 18:04:55,790 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 06:04:55 BoogieIcfgContainer [2022-01-10 18:04:55,790 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-10 18:04:55,790 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2022-01-10 18:04:55,791 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2022-01-10 18:04:55,792 INFO L275 PluginConnector]: IcfgTransformer initialized [2022-01-10 18:04:55,793 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 06:04:55" (1/1) ... [2022-01-10 18:04:56,095 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 10.01 06:04:56 BasicIcfg [2022-01-10 18:04:56,095 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2022-01-10 18:04:56,096 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-10 18:04:56,096 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-10 18:04:56,098 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-10 18:04:56,098 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.01 06:04:53" (1/4) ... [2022-01-10 18:04:56,099 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2fdc1fbe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 06:04:56, skipping insertion in model container [2022-01-10 18:04:56,099 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:04:54" (2/4) ... [2022-01-10 18:04:56,099 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2fdc1fbe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 06:04:56, skipping insertion in model container [2022-01-10 18:04:56,099 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 06:04:55" (3/4) ... [2022-01-10 18:04:56,099 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2fdc1fbe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.01 06:04:56, skipping insertion in model container [2022-01-10 18:04:56,099 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 10.01 06:04:56" (4/4) ... [2022-01-10 18:04:56,100 INFO L111 eAbstractionObserver]: Analyzing ICFG email_spec3_product18.cil.cTransformedIcfg [2022-01-10 18:04:56,104 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-10 18:04:56,104 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2022-01-10 18:04:56,147 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-10 18:04:56,155 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2022-01-10 18:04:56,155 INFO L340 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2022-01-10 18:04:56,176 INFO L276 IsEmpty]: Start isEmpty. Operand has 492 states, 487 states have (on average 1.6981519507186857) internal successors, (827), 491 states have internal predecessors, (827), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:04:56,191 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2022-01-10 18:04:56,191 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:04:56,191 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, 1, 1, 1, 1, 1, 1] [2022-01-10 18:04:56,192 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-01-10 18:04:56,199 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:04:56,199 INFO L85 PathProgramCache]: Analyzing trace with hash 1330389403, now seen corresponding path program 1 times [2022-01-10 18:04:56,205 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:04:56,205 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1188604284] [2022-01-10 18:04:56,205 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:04:56,206 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:04:56,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:04:56,540 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 18:04:56,541 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:04:56,541 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1188604284] [2022-01-10 18:04:56,542 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1188604284] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:04:56,542 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:04:56,542 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 18:04:56,543 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [798111965] [2022-01-10 18:04:56,544 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:04:56,548 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-01-10 18:04:56,548 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:04:56,569 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-01-10 18:04:56,570 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-01-10 18:04:56,572 INFO L87 Difference]: Start difference. First operand has 492 states, 487 states have (on average 1.6981519507186857) internal successors, (827), 491 states have internal predecessors, (827), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 26.5) internal successors, (53), 2 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:04:56,628 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:04:56,628 INFO L93 Difference]: Finished difference Result 721 states and 1192 transitions. [2022-01-10 18:04:56,629 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-01-10 18:04:56,630 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 26.5) internal successors, (53), 2 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 53 [2022-01-10 18:04:56,630 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:04:56,640 INFO L225 Difference]: With dead ends: 721 [2022-01-10 18:04:56,640 INFO L226 Difference]: Without dead ends: 429 [2022-01-10 18:04:56,643 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-01-10 18:04:56,645 INFO L933 BasicCegarLoop]: 817 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, 817 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 18:04:56,646 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 817 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 18:04:56,661 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 429 states. [2022-01-10 18:04:56,693 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 429 to 429. [2022-01-10 18:04:56,695 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 429 states, 425 states have (on average 1.703529411764706) internal successors, (724), 428 states have internal predecessors, (724), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:04:56,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 429 states to 429 states and 724 transitions. [2022-01-10 18:04:56,697 INFO L78 Accepts]: Start accepts. Automaton has 429 states and 724 transitions. Word has length 53 [2022-01-10 18:04:56,697 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:04:56,697 INFO L470 AbstractCegarLoop]: Abstraction has 429 states and 724 transitions. [2022-01-10 18:04:56,697 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 26.5) internal successors, (53), 2 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:04:56,697 INFO L276 IsEmpty]: Start isEmpty. Operand 429 states and 724 transitions. [2022-01-10 18:04:56,704 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2022-01-10 18:04:56,704 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:04:56,704 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 18:04:56,704 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-10 18:04:56,705 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-01-10 18:04:56,707 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:04:56,707 INFO L85 PathProgramCache]: Analyzing trace with hash 917843537, now seen corresponding path program 1 times [2022-01-10 18:04:56,707 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:04:56,708 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1836605476] [2022-01-10 18:04:56,708 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:04:56,709 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:04:56,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:04:56,923 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 18:04:56,923 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:04:56,924 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1836605476] [2022-01-10 18:04:56,924 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1836605476] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:04:56,924 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:04:56,924 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 18:04:56,924 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [89569967] [2022-01-10 18:04:56,924 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:04:56,925 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 18:04:56,925 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:04:56,926 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 18:04:56,926 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 18:04:56,926 INFO L87 Difference]: Start difference. First operand 429 states and 724 transitions. Second operand has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:04:57,028 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:04:57,028 INFO L93 Difference]: Finished difference Result 839 states and 1420 transitions. [2022-01-10 18:04:57,030 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 18:04:57,030 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 54 [2022-01-10 18:04:57,030 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:04:57,033 INFO L225 Difference]: With dead ends: 839 [2022-01-10 18:04:57,033 INFO L226 Difference]: Without dead ends: 429 [2022-01-10 18:04:57,038 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 18:04:57,039 INFO L933 BasicCegarLoop]: 705 mSDtfsCounter, 699 mSDsluCounter, 13 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 699 SdHoareTripleChecker+Valid, 718 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 18:04:57,040 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [699 Valid, 718 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 18:04:57,042 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 429 states. [2022-01-10 18:04:57,058 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 429 to 429. [2022-01-10 18:04:57,059 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 429 states, 425 states have (on average 1.6988235294117646) internal successors, (722), 428 states have internal predecessors, (722), 0 states have call successors, (0), 0 states 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 18:04:57,060 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 429 states to 429 states and 722 transitions. [2022-01-10 18:04:57,061 INFO L78 Accepts]: Start accepts. Automaton has 429 states and 722 transitions. Word has length 54 [2022-01-10 18:04:57,061 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:04:57,061 INFO L470 AbstractCegarLoop]: Abstraction has 429 states and 722 transitions. [2022-01-10 18:04:57,061 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:04:57,061 INFO L276 IsEmpty]: Start isEmpty. Operand 429 states and 722 transitions. [2022-01-10 18:04:57,062 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2022-01-10 18:04:57,062 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:04:57,062 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 18:04:57,062 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-01-10 18:04:57,063 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-01-10 18:04:57,067 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:04:57,067 INFO L85 PathProgramCache]: Analyzing trace with hash 504513105, now seen corresponding path program 1 times [2022-01-10 18:04:57,067 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:04:57,068 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [773233052] [2022-01-10 18:04:57,068 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:04:57,068 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:04:57,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:04:57,252 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 18:04:57,252 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:04:57,252 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [773233052] [2022-01-10 18:04:57,253 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [773233052] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:04:57,254 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:04:57,254 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 18:04:57,254 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1367706363] [2022-01-10 18:04:57,254 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:04:57,255 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 18:04:57,255 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:04:57,255 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 18:04:57,256 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 18:04:57,256 INFO L87 Difference]: Start difference. First operand 429 states and 722 transitions. Second operand has 5 states, 5 states have (on average 11.2) internal successors, (56), 5 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:04:57,433 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:04:57,433 INFO L93 Difference]: Finished difference Result 2013 states and 3406 transitions. [2022-01-10 18:04:57,433 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-10 18:04:57,434 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.2) internal successors, (56), 5 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 56 [2022-01-10 18:04:57,434 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:04:57,440 INFO L225 Difference]: With dead ends: 2013 [2022-01-10 18:04:57,440 INFO L226 Difference]: Without dead ends: 1608 [2022-01-10 18:04:57,444 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 18:04:57,446 INFO L933 BasicCegarLoop]: 1367 mSDtfsCounter, 3393 mSDsluCounter, 2038 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3393 SdHoareTripleChecker+Valid, 3405 SdHoareTripleChecker+Invalid, 82 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 62 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 18:04:57,447 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3393 Valid, 3405 Invalid, 82 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 62 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 18:04:57,449 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1608 states. [2022-01-10 18:04:57,477 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1608 to 429. [2022-01-10 18:04:57,478 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 429 states, 425 states have (on average 1.6964705882352942) internal successors, (721), 428 states have internal predecessors, (721), 0 states have call successors, (0), 0 states 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 18:04:57,479 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 429 states to 429 states and 721 transitions. [2022-01-10 18:04:57,479 INFO L78 Accepts]: Start accepts. Automaton has 429 states and 721 transitions. Word has length 56 [2022-01-10 18:04:57,479 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:04:57,479 INFO L470 AbstractCegarLoop]: Abstraction has 429 states and 721 transitions. [2022-01-10 18:04:57,479 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.2) internal successors, (56), 5 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:04:57,479 INFO L276 IsEmpty]: Start isEmpty. Operand 429 states and 721 transitions. [2022-01-10 18:04:57,482 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2022-01-10 18:04:57,482 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:04:57,482 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 18:04:57,482 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-01-10 18:04:57,482 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-01-10 18:04:57,483 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:04:57,483 INFO L85 PathProgramCache]: Analyzing trace with hash 26862581, now seen corresponding path program 1 times [2022-01-10 18:04:57,483 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:04:57,483 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1546679033] [2022-01-10 18:04:57,483 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:04:57,483 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:04:57,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:04:57,587 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 18:04:57,587 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:04:57,587 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1546679033] [2022-01-10 18:04:57,587 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1546679033] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:04:57,587 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:04:57,587 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 18:04:57,588 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [501777231] [2022-01-10 18:04:57,588 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:04:57,589 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 18:04:57,589 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:04:57,590 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 18:04:57,590 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 18:04:57,590 INFO L87 Difference]: Start difference. First operand 429 states and 721 transitions. Second operand has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:04:57,623 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:04:57,623 INFO L93 Difference]: Finished difference Result 843 states and 1420 transitions. [2022-01-10 18:04:57,623 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 18:04:57,624 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 57 [2022-01-10 18:04:57,624 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:04:57,625 INFO L225 Difference]: With dead ends: 843 [2022-01-10 18:04:57,625 INFO L226 Difference]: Without dead ends: 443 [2022-01-10 18:04:57,626 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 18:04:57,632 INFO L933 BasicCegarLoop]: 735 mSDtfsCounter, 700 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 700 SdHoareTripleChecker+Valid, 757 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 18:04:57,633 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [700 Valid, 757 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 18:04:57,633 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 443 states. [2022-01-10 18:04:57,659 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 443 to 429. [2022-01-10 18:04:57,660 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 429 states, 425 states have (on average 1.6941176470588235) internal successors, (720), 428 states have internal predecessors, (720), 0 states have call successors, (0), 0 states 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 18:04:57,661 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 429 states to 429 states and 720 transitions. [2022-01-10 18:04:57,661 INFO L78 Accepts]: Start accepts. Automaton has 429 states and 720 transitions. Word has length 57 [2022-01-10 18:04:57,662 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:04:57,662 INFO L470 AbstractCegarLoop]: Abstraction has 429 states and 720 transitions. [2022-01-10 18:04:57,662 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:04:57,662 INFO L276 IsEmpty]: Start isEmpty. Operand 429 states and 720 transitions. [2022-01-10 18:04:57,663 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2022-01-10 18:04:57,664 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:04:57,664 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 18:04:57,664 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-01-10 18:04:57,664 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-01-10 18:04:57,665 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:04:57,665 INFO L85 PathProgramCache]: Analyzing trace with hash 592107216, now seen corresponding path program 1 times [2022-01-10 18:04:57,665 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:04:57,665 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1740635425] [2022-01-10 18:04:57,665 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:04:57,665 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:04:57,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:04:57,801 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 18:04:57,801 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:04:57,801 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1740635425] [2022-01-10 18:04:57,801 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1740635425] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:04:57,801 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:04:57,801 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 18:04:57,802 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [399431634] [2022-01-10 18:04:57,802 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:04:57,802 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 18:04:57,802 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:04:57,802 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 18:04:57,802 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 18:04:57,803 INFO L87 Difference]: Start difference. First operand 429 states and 720 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 18:04:57,927 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:04:57,927 INFO L93 Difference]: Finished difference Result 1221 states and 2060 transitions. [2022-01-10 18:04:57,928 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 18:04:57,928 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 18:04:57,928 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:04:57,931 INFO L225 Difference]: With dead ends: 1221 [2022-01-10 18:04:57,931 INFO L226 Difference]: Without dead ends: 826 [2022-01-10 18:04:57,931 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-01-10 18:04:57,932 INFO L933 BasicCegarLoop]: 729 mSDtfsCounter, 3316 mSDsluCounter, 743 mSDsCounter, 0 mSdLazyCounter, 67 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3316 SdHoareTripleChecker+Valid, 1472 SdHoareTripleChecker+Invalid, 74 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 67 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 18:04:57,932 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3316 Valid, 1472 Invalid, 74 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 67 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 18:04:57,933 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 826 states. [2022-01-10 18:04:57,952 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 826 to 429. [2022-01-10 18:04:57,953 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 429 states, 425 states have (on average 1.6894117647058824) internal successors, (718), 428 states have internal predecessors, (718), 0 states have call successors, (0), 0 states 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 18:04:57,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 429 states to 429 states and 718 transitions. [2022-01-10 18:04:57,956 INFO L78 Accepts]: Start accepts. Automaton has 429 states and 718 transitions. Word has length 58 [2022-01-10 18:04:57,960 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:04:57,960 INFO L470 AbstractCegarLoop]: Abstraction has 429 states and 718 transitions. [2022-01-10 18:04:57,960 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 18:04:57,960 INFO L276 IsEmpty]: Start isEmpty. Operand 429 states and 718 transitions. [2022-01-10 18:04:57,961 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2022-01-10 18:04:57,961 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:04:57,961 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 18:04:57,961 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-01-10 18:04:57,961 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-01-10 18:04:57,962 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:04:57,962 INFO L85 PathProgramCache]: Analyzing trace with hash -403114989, now seen corresponding path program 1 times [2022-01-10 18:04:57,962 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:04:57,962 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2025045881] [2022-01-10 18:04:57,962 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:04:57,962 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:04:58,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:04:58,052 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 18:04:58,052 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:04:58,052 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2025045881] [2022-01-10 18:04:58,052 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2025045881] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:04:58,052 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:04:58,052 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-10 18:04:58,052 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1632106236] [2022-01-10 18:04:58,053 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:04:58,053 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-10 18:04:58,053 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:04:58,053 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-10 18:04:58,053 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-01-10 18:04:58,053 INFO L87 Difference]: Start difference. First operand 429 states and 718 transitions. Second operand has 6 states, 6 states have (on average 10.0) internal successors, (60), 6 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:04:58,296 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:04:58,297 INFO L93 Difference]: Finished difference Result 2057 states and 3430 transitions. [2022-01-10 18:04:58,297 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-01-10 18:04:58,297 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.0) internal successors, (60), 6 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 60 [2022-01-10 18:04:58,298 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:04:58,303 INFO L225 Difference]: With dead ends: 2057 [2022-01-10 18:04:58,303 INFO L226 Difference]: Without dead ends: 1906 [2022-01-10 18:04:58,304 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2022-01-10 18:04:58,304 INFO L933 BasicCegarLoop]: 984 mSDtfsCounter, 3634 mSDsluCounter, 3754 mSDsCounter, 0 mSdLazyCounter, 100 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3634 SdHoareTripleChecker+Valid, 4738 SdHoareTripleChecker+Invalid, 122 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 100 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 18:04:58,305 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3634 Valid, 4738 Invalid, 122 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 100 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 18:04:58,306 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1906 states. [2022-01-10 18:04:58,360 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1906 to 793. [2022-01-10 18:04:58,362 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 793 states, 789 states have (on average 1.6945500633713562) internal successors, (1337), 792 states have internal predecessors, (1337), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:04:58,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 793 states to 793 states and 1337 transitions. [2022-01-10 18:04:58,364 INFO L78 Accepts]: Start accepts. Automaton has 793 states and 1337 transitions. Word has length 60 [2022-01-10 18:04:58,364 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:04:58,364 INFO L470 AbstractCegarLoop]: Abstraction has 793 states and 1337 transitions. [2022-01-10 18:04:58,364 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.0) internal successors, (60), 6 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:04:58,364 INFO L276 IsEmpty]: Start isEmpty. Operand 793 states and 1337 transitions. [2022-01-10 18:04:58,365 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2022-01-10 18:04:58,365 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:04:58,365 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 18:04:58,365 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-01-10 18:04:58,366 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-01-10 18:04:58,366 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:04:58,366 INFO L85 PathProgramCache]: Analyzing trace with hash -622356186, now seen corresponding path program 1 times [2022-01-10 18:04:58,366 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:04:58,366 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1551624499] [2022-01-10 18:04:58,366 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:04:58,366 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:04:58,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:04:58,446 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 18:04:58,447 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:04:58,447 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1551624499] [2022-01-10 18:04:58,447 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1551624499] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:04:58,447 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:04:58,447 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-10 18:04:58,447 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1160441548] [2022-01-10 18:04:58,447 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:04:58,448 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-10 18:04:58,448 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:04:58,448 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-10 18:04:58,448 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-01-10 18:04:58,448 INFO L87 Difference]: Start difference. First operand 793 states and 1337 transitions. Second operand has 6 states, 6 states have (on average 10.166666666666666) internal successors, (61), 6 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:04:58,778 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:04:58,779 INFO L93 Difference]: Finished difference Result 3717 states and 6257 transitions. [2022-01-10 18:04:58,779 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-01-10 18:04:58,779 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.166666666666666) internal successors, (61), 6 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 61 [2022-01-10 18:04:58,779 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:04:58,790 INFO L225 Difference]: With dead ends: 3717 [2022-01-10 18:04:58,790 INFO L226 Difference]: Without dead ends: 3468 [2022-01-10 18:04:58,791 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2022-01-10 18:04:58,792 INFO L933 BasicCegarLoop]: 944 mSDtfsCounter, 3603 mSDsluCounter, 3002 mSDsCounter, 0 mSdLazyCounter, 88 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3603 SdHoareTripleChecker+Valid, 3946 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 18:04:58,792 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3603 Valid, 3946 Invalid, 110 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 88 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 18:04:58,795 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3468 states. [2022-01-10 18:04:58,870 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3468 to 1498. [2022-01-10 18:04:58,872 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1498 states, 1494 states have (on average 1.7034805890227578) internal successors, (2545), 1497 states have internal predecessors, (2545), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:04:58,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1498 states to 1498 states and 2545 transitions. [2022-01-10 18:04:58,876 INFO L78 Accepts]: Start accepts. Automaton has 1498 states and 2545 transitions. Word has length 61 [2022-01-10 18:04:58,876 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:04:58,876 INFO L470 AbstractCegarLoop]: Abstraction has 1498 states and 2545 transitions. [2022-01-10 18:04:58,876 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.166666666666666) internal successors, (61), 6 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:04:58,876 INFO L276 IsEmpty]: Start isEmpty. Operand 1498 states and 2545 transitions. [2022-01-10 18:04:58,878 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2022-01-10 18:04:58,878 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:04:58,878 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 18:04:58,878 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-01-10 18:04:58,878 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-01-10 18:04:58,879 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:04:58,879 INFO L85 PathProgramCache]: Analyzing trace with hash 1447392507, now seen corresponding path program 1 times [2022-01-10 18:04:58,879 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:04:58,879 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1910930697] [2022-01-10 18:04:58,879 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:04:58,879 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:04:58,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:04:58,954 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 18:04:58,954 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:04:58,954 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1910930697] [2022-01-10 18:04:58,954 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1910930697] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:04:58,954 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:04:58,955 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 18:04:58,955 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1423034348] [2022-01-10 18:04:58,955 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:04:58,955 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 18:04:58,955 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:04:58,955 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 18:04:58,956 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 18:04:58,956 INFO L87 Difference]: Start difference. First operand 1498 states and 2545 transitions. Second operand has 5 states, 5 states have (on average 12.2) internal successors, (61), 5 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:04:59,180 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:04:59,180 INFO L93 Difference]: Finished difference Result 4306 states and 7375 transitions. [2022-01-10 18:04:59,181 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 18:04:59,181 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.2) internal successors, (61), 5 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 61 [2022-01-10 18:04:59,181 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:04:59,189 INFO L225 Difference]: With dead ends: 4306 [2022-01-10 18:04:59,189 INFO L226 Difference]: Without dead ends: 2858 [2022-01-10 18:04:59,191 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-01-10 18:04:59,191 INFO L933 BasicCegarLoop]: 1339 mSDtfsCounter, 2091 mSDsluCounter, 671 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2091 SdHoareTripleChecker+Valid, 2010 SdHoareTripleChecker+Invalid, 69 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 62 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 18:04:59,191 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2091 Valid, 2010 Invalid, 69 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 62 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 18:04:59,193 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2858 states. [2022-01-10 18:04:59,276 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2858 to 1498. [2022-01-10 18:04:59,279 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1498 states, 1494 states have (on average 1.7021419009370817) internal successors, (2543), 1497 states have internal predecessors, (2543), 0 states have call successors, (0), 0 states 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 18:04:59,282 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1498 states to 1498 states and 2543 transitions. [2022-01-10 18:04:59,282 INFO L78 Accepts]: Start accepts. Automaton has 1498 states and 2543 transitions. Word has length 61 [2022-01-10 18:04:59,282 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:04:59,282 INFO L470 AbstractCegarLoop]: Abstraction has 1498 states and 2543 transitions. [2022-01-10 18:04:59,282 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.2) internal successors, (61), 5 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:04:59,282 INFO L276 IsEmpty]: Start isEmpty. Operand 1498 states and 2543 transitions. [2022-01-10 18:04:59,284 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2022-01-10 18:04:59,284 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:04:59,284 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 18:04:59,284 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-01-10 18:04:59,285 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-01-10 18:04:59,285 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:04:59,285 INFO L85 PathProgramCache]: Analyzing trace with hash 815569439, now seen corresponding path program 1 times [2022-01-10 18:04:59,285 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:04:59,285 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [196130932] [2022-01-10 18:04:59,285 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:04:59,285 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:04:59,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:04:59,348 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 18:04:59,349 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:04:59,349 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [196130932] [2022-01-10 18:04:59,349 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [196130932] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:04:59,349 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:04:59,349 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 18:04:59,349 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1866587906] [2022-01-10 18:04:59,349 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:04:59,350 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 18:04:59,350 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:04:59,352 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 18:04:59,352 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 18:04:59,353 INFO L87 Difference]: Start difference. First operand 1498 states and 2543 transitions. Second operand has 5 states, 5 states have (on average 12.4) internal successors, (62), 5 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 18:04:59,595 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:04:59,595 INFO L93 Difference]: Finished difference Result 4304 states and 7367 transitions. [2022-01-10 18:04:59,595 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 18:04:59,595 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.4) internal successors, (62), 5 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 18:04:59,596 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:04:59,604 INFO L225 Difference]: With dead ends: 4304 [2022-01-10 18:04:59,604 INFO L226 Difference]: Without dead ends: 2866 [2022-01-10 18:04:59,606 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-01-10 18:04:59,607 INFO L933 BasicCegarLoop]: 1344 mSDtfsCounter, 2076 mSDsluCounter, 698 mSDsCounter, 0 mSdLazyCounter, 53 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2076 SdHoareTripleChecker+Valid, 2042 SdHoareTripleChecker+Invalid, 65 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 53 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 18:04:59,607 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2076 Valid, 2042 Invalid, 65 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 53 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 18:04:59,609 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2866 states. [2022-01-10 18:04:59,690 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2866 to 1498. [2022-01-10 18:04:59,692 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1498 states, 1494 states have (on average 1.7008032128514057) internal successors, (2541), 1497 states have internal predecessors, (2541), 0 states have call successors, (0), 0 states 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 18:04:59,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1498 states to 1498 states and 2541 transitions. [2022-01-10 18:04:59,695 INFO L78 Accepts]: Start accepts. Automaton has 1498 states and 2541 transitions. Word has length 62 [2022-01-10 18:04:59,696 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:04:59,696 INFO L470 AbstractCegarLoop]: Abstraction has 1498 states and 2541 transitions. [2022-01-10 18:04:59,696 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.4) internal successors, (62), 5 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 18:04:59,696 INFO L276 IsEmpty]: Start isEmpty. Operand 1498 states and 2541 transitions. [2022-01-10 18:04:59,698 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2022-01-10 18:04:59,698 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:04:59,698 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 18:04:59,698 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-01-10 18:04:59,698 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-01-10 18:04:59,698 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:04:59,698 INFO L85 PathProgramCache]: Analyzing trace with hash -209124482, now seen corresponding path program 1 times [2022-01-10 18:04:59,698 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:04:59,699 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2006439690] [2022-01-10 18:04:59,699 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:04:59,699 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:04:59,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:04:59,765 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 18:04:59,765 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:04:59,765 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2006439690] [2022-01-10 18:04:59,765 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2006439690] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:04:59,765 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:04:59,765 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 18:04:59,765 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1144612040] [2022-01-10 18:04:59,765 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:04:59,766 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 18:04:59,766 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:04:59,766 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 18:04:59,766 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 18:04:59,766 INFO L87 Difference]: Start difference. First operand 1498 states and 2541 transitions. Second operand has 5 states, 5 states have (on average 12.4) internal successors, (62), 5 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 18:05:00,000 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:05:00,000 INFO L93 Difference]: Finished difference Result 2827 states and 4656 transitions. [2022-01-10 18:05:00,000 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 18:05:00,001 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.4) internal successors, (62), 5 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 18:05:00,001 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:05:00,008 INFO L225 Difference]: With dead ends: 2827 [2022-01-10 18:05:00,008 INFO L226 Difference]: Without dead ends: 2401 [2022-01-10 18:05:00,010 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 18:05:00,010 INFO L933 BasicCegarLoop]: 1008 mSDtfsCounter, 883 mSDsluCounter, 2087 mSDsCounter, 0 mSdLazyCounter, 73 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 883 SdHoareTripleChecker+Valid, 3095 SdHoareTripleChecker+Invalid, 85 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 73 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 18:05:00,010 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [883 Valid, 3095 Invalid, 85 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 73 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 18:05:00,012 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2401 states. [2022-01-10 18:05:00,097 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2401 to 1552. [2022-01-10 18:05:00,099 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1552 states, 1548 states have (on average 1.6925064599483204) internal successors, (2620), 1551 states have internal predecessors, (2620), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:05:00,102 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1552 states to 1552 states and 2620 transitions. [2022-01-10 18:05:00,102 INFO L78 Accepts]: Start accepts. Automaton has 1552 states and 2620 transitions. Word has length 62 [2022-01-10 18:05:00,103 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:05:00,103 INFO L470 AbstractCegarLoop]: Abstraction has 1552 states and 2620 transitions. [2022-01-10 18:05:00,103 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.4) internal successors, (62), 5 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 18:05:00,103 INFO L276 IsEmpty]: Start isEmpty. Operand 1552 states and 2620 transitions. [2022-01-10 18:05:00,105 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2022-01-10 18:05:00,105 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:05:00,105 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 18:05:00,105 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-01-10 18:05:00,105 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-01-10 18:05:00,105 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:05:00,105 INFO L85 PathProgramCache]: Analyzing trace with hash 1103152263, now seen corresponding path program 1 times [2022-01-10 18:05:00,106 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:05:00,106 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1186049663] [2022-01-10 18:05:00,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:05:00,106 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:05:00,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:05:00,191 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 18:05:00,192 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:05:00,192 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1186049663] [2022-01-10 18:05:00,192 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1186049663] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:05:00,192 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:05:00,192 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 18:05:00,192 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1354618307] [2022-01-10 18:05:00,192 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:05:00,192 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 18:05:00,193 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:05:00,193 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 18:05:00,193 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 18:05:00,193 INFO L87 Difference]: Start difference. First operand 1552 states and 2620 transitions. Second operand has 5 states, 5 states have (on average 12.4) internal successors, (62), 4 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:05:00,516 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:05:00,516 INFO L93 Difference]: Finished difference Result 4038 states and 6482 transitions. [2022-01-10 18:05:00,516 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-01-10 18:05:00,516 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.4) internal successors, (62), 4 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 62 [2022-01-10 18:05:00,517 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:05:00,526 INFO L225 Difference]: With dead ends: 4038 [2022-01-10 18:05:00,526 INFO L226 Difference]: Without dead ends: 3634 [2022-01-10 18:05:00,527 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 18:05:00,527 INFO L933 BasicCegarLoop]: 720 mSDtfsCounter, 1760 mSDsluCounter, 2033 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1760 SdHoareTripleChecker+Valid, 2753 SdHoareTripleChecker+Invalid, 63 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 18:05:00,527 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1760 Valid, 2753 Invalid, 63 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 18:05:00,530 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3634 states. [2022-01-10 18:05:00,655 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3634 to 2058. [2022-01-10 18:05:00,659 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2058 states, 2054 states have (on average 1.6606621226874392) internal successors, (3411), 2057 states have internal predecessors, (3411), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:05:00,662 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2058 states to 2058 states and 3411 transitions. [2022-01-10 18:05:00,662 INFO L78 Accepts]: Start accepts. Automaton has 2058 states and 3411 transitions. Word has length 62 [2022-01-10 18:05:00,662 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:05:00,662 INFO L470 AbstractCegarLoop]: Abstraction has 2058 states and 3411 transitions. [2022-01-10 18:05:00,663 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.4) internal successors, (62), 4 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:05:00,663 INFO L276 IsEmpty]: Start isEmpty. Operand 2058 states and 3411 transitions. [2022-01-10 18:05:00,665 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2022-01-10 18:05:00,665 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:05:00,665 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 18:05:00,665 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-01-10 18:05:00,665 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-01-10 18:05:00,666 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:05:00,666 INFO L85 PathProgramCache]: Analyzing trace with hash 654495648, now seen corresponding path program 1 times [2022-01-10 18:05:00,666 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:05:00,666 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [264826598] [2022-01-10 18:05:00,666 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:05:00,666 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:05:00,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:05:00,742 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 18:05:00,742 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:05:00,742 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [264826598] [2022-01-10 18:05:00,743 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [264826598] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:05:00,743 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:05:00,743 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-10 18:05:00,743 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [680380757] [2022-01-10 18:05:00,743 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:05:00,743 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-10 18:05:00,743 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:05:00,744 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-10 18:05:00,744 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-01-10 18:05:00,744 INFO L87 Difference]: Start difference. First operand 2058 states and 3411 transitions. Second operand has 7 states, 7 states have (on average 9.0) internal successors, (63), 7 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:05:01,016 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:05:01,016 INFO L93 Difference]: Finished difference Result 3271 states and 5295 transitions. [2022-01-10 18:05:01,017 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-01-10 18:05:01,017 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.0) internal successors, (63), 7 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 63 [2022-01-10 18:05:01,017 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:05:01,024 INFO L225 Difference]: With dead ends: 3271 [2022-01-10 18:05:01,025 INFO L226 Difference]: Without dead ends: 2479 [2022-01-10 18:05:01,026 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=64, Invalid=118, Unknown=0, NotChecked=0, Total=182 [2022-01-10 18:05:01,027 INFO L933 BasicCegarLoop]: 751 mSDtfsCounter, 1474 mSDsluCounter, 2707 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1474 SdHoareTripleChecker+Valid, 3458 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 18:05:01,027 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1474 Valid, 3458 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 18:05:01,029 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2479 states. [2022-01-10 18:05:01,210 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2479 to 1950. [2022-01-10 18:05:01,213 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1950 states, 1946 states have (on average 1.6521068859198356) internal successors, (3215), 1949 states have internal predecessors, (3215), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:05:01,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1950 states to 1950 states and 3215 transitions. [2022-01-10 18:05:01,217 INFO L78 Accepts]: Start accepts. Automaton has 1950 states and 3215 transitions. Word has length 63 [2022-01-10 18:05:01,217 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:05:01,217 INFO L470 AbstractCegarLoop]: Abstraction has 1950 states and 3215 transitions. [2022-01-10 18:05:01,217 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.0) internal successors, (63), 7 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:05:01,217 INFO L276 IsEmpty]: Start isEmpty. Operand 1950 states and 3215 transitions. [2022-01-10 18:05:01,221 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2022-01-10 18:05:01,221 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:05:01,221 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 18:05:01,222 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-01-10 18:05:01,222 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-01-10 18:05:01,222 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:05:01,222 INFO L85 PathProgramCache]: Analyzing trace with hash -1246583836, now seen corresponding path program 1 times [2022-01-10 18:05:01,222 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:05:01,222 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [371318908] [2022-01-10 18:05:01,222 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:05:01,223 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:05:01,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:05:01,336 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 18:05:01,336 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:05:01,336 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [371318908] [2022-01-10 18:05:01,337 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [371318908] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:05:01,337 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:05:01,337 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-01-10 18:05:01,337 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1661289549] [2022-01-10 18:05:01,337 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:05:01,337 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-01-10 18:05:01,337 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:05:01,337 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-01-10 18:05:01,338 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-01-10 18:05:01,338 INFO L87 Difference]: Start difference. First operand 1950 states and 3215 transitions. Second operand has 9 states, 9 states have (on average 7.111111111111111) internal successors, (64), 9 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:05:02,513 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:05:02,513 INFO L93 Difference]: Finished difference Result 6800 states and 10227 transitions. [2022-01-10 18:05:02,514 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2022-01-10 18:05:02,514 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 7.111111111111111) internal successors, (64), 9 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 64 [2022-01-10 18:05:02,514 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:05:02,538 INFO L225 Difference]: With dead ends: 6800 [2022-01-10 18:05:02,539 INFO L226 Difference]: Without dead ends: 6450 [2022-01-10 18:05:02,541 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 229 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=306, Invalid=750, Unknown=0, NotChecked=0, Total=1056 [2022-01-10 18:05:02,542 INFO L933 BasicCegarLoop]: 809 mSDtfsCounter, 4694 mSDsluCounter, 4529 mSDsCounter, 0 mSdLazyCounter, 154 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4694 SdHoareTripleChecker+Valid, 5338 SdHoareTripleChecker+Invalid, 190 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 154 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 18:05:02,542 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4694 Valid, 5338 Invalid, 190 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 154 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 18:05:02,547 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6450 states. [2022-01-10 18:05:02,850 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6450 to 2900. [2022-01-10 18:05:02,855 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2900 states, 2896 states have (on average 1.6177486187845305) internal successors, (4685), 2899 states have internal predecessors, (4685), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:05:02,860 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2900 states to 2900 states and 4685 transitions. [2022-01-10 18:05:02,860 INFO L78 Accepts]: Start accepts. Automaton has 2900 states and 4685 transitions. Word has length 64 [2022-01-10 18:05:02,860 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:05:02,860 INFO L470 AbstractCegarLoop]: Abstraction has 2900 states and 4685 transitions. [2022-01-10 18:05:02,861 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.111111111111111) internal successors, (64), 9 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:05:02,861 INFO L276 IsEmpty]: Start isEmpty. Operand 2900 states and 4685 transitions. [2022-01-10 18:05:02,864 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-01-10 18:05:02,864 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:05:02,864 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 18:05:02,864 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-01-10 18:05:02,864 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-01-10 18:05:02,864 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:05:02,865 INFO L85 PathProgramCache]: Analyzing trace with hash 41159243, now seen corresponding path program 1 times [2022-01-10 18:05:02,865 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:05:02,865 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [40349403] [2022-01-10 18:05:02,865 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:05:02,865 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:05:02,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:05:03,005 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 18:05:03,006 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:05:03,006 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [40349403] [2022-01-10 18:05:03,006 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [40349403] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:05:03,006 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:05:03,006 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-01-10 18:05:03,006 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [213026524] [2022-01-10 18:05:03,006 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:05:03,007 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-01-10 18:05:03,007 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:05:03,007 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-01-10 18:05:03,007 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2022-01-10 18:05:03,007 INFO L87 Difference]: Start difference. First operand 2900 states and 4685 transitions. Second operand has 10 states, 10 states have (on average 6.5) internal successors, (65), 9 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:05:06,058 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:05:06,059 INFO L93 Difference]: Finished difference Result 18385 states and 28573 transitions. [2022-01-10 18:05:06,059 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2022-01-10 18:05:06,059 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 6.5) internal successors, (65), 9 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 65 [2022-01-10 18:05:06,059 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:05:06,090 INFO L225 Difference]: With dead ends: 18385 [2022-01-10 18:05:06,091 INFO L226 Difference]: Without dead ends: 17347 [2022-01-10 18:05:06,097 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 214 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=337, Invalid=785, Unknown=0, NotChecked=0, Total=1122 [2022-01-10 18:05:06,098 INFO L933 BasicCegarLoop]: 783 mSDtfsCounter, 6925 mSDsluCounter, 6756 mSDsCounter, 0 mSdLazyCounter, 537 mSolverCounterSat, 52 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6925 SdHoareTripleChecker+Valid, 7539 SdHoareTripleChecker+Invalid, 589 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 52 IncrementalHoareTripleChecker+Valid, 537 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-10 18:05:06,098 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6925 Valid, 7539 Invalid, 589 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [52 Valid, 537 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-10 18:05:06,110 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17347 states. [2022-01-10 18:05:06,956 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17347 to 7306. [2022-01-10 18:05:06,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7306 states, 7302 states have (on average 1.602711585866886) internal successors, (11703), 7305 states have internal predecessors, (11703), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:05:06,986 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7306 states to 7306 states and 11703 transitions. [2022-01-10 18:05:06,986 INFO L78 Accepts]: Start accepts. Automaton has 7306 states and 11703 transitions. Word has length 65 [2022-01-10 18:05:06,986 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:05:06,986 INFO L470 AbstractCegarLoop]: Abstraction has 7306 states and 11703 transitions. [2022-01-10 18:05:06,987 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.5) internal successors, (65), 9 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:05:06,987 INFO L276 IsEmpty]: Start isEmpty. Operand 7306 states and 11703 transitions. [2022-01-10 18:05:06,994 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-01-10 18:05:06,994 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:05:06,994 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 18:05:06,994 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-01-10 18:05:06,994 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-01-10 18:05:06,995 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:05:06,995 INFO L85 PathProgramCache]: Analyzing trace with hash 42172137, now seen corresponding path program 1 times [2022-01-10 18:05:06,995 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:05:06,995 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1993415164] [2022-01-10 18:05:06,995 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:05:06,995 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:05:07,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:05:07,137 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 18:05:07,138 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:05:07,138 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1993415164] [2022-01-10 18:05:07,138 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1993415164] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:05:07,138 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:05:07,138 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-01-10 18:05:07,138 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [833108779] [2022-01-10 18:05:07,138 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:05:07,138 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-01-10 18:05:07,138 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:05:07,139 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-01-10 18:05:07,139 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-01-10 18:05:07,139 INFO L87 Difference]: Start difference. First operand 7306 states and 11703 transitions. Second operand has 9 states, 9 states have (on average 7.222222222222222) internal successors, (65), 9 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:05:10,517 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:05:10,517 INFO L93 Difference]: Finished difference Result 18420 states and 27415 transitions. [2022-01-10 18:05:10,517 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2022-01-10 18:05:10,518 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 7.222222222222222) internal successors, (65), 9 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 65 [2022-01-10 18:05:10,518 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:05:10,549 INFO L225 Difference]: With dead ends: 18420 [2022-01-10 18:05:10,549 INFO L226 Difference]: Without dead ends: 17143 [2022-01-10 18:05:10,556 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 229 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=306, Invalid=750, Unknown=0, NotChecked=0, Total=1056 [2022-01-10 18:05:10,557 INFO L933 BasicCegarLoop]: 848 mSDtfsCounter, 4392 mSDsluCounter, 4560 mSDsCounter, 0 mSdLazyCounter, 148 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4392 SdHoareTripleChecker+Valid, 5408 SdHoareTripleChecker+Invalid, 176 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 148 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 18:05:10,557 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4392 Valid, 5408 Invalid, 176 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 148 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 18:05:10,573 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17143 states. [2022-01-10 18:05:11,491 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17143 to 7324. [2022-01-10 18:05:11,498 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7324 states, 7320 states have (on average 1.6012295081967214) internal successors, (11721), 7323 states have internal predecessors, (11721), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:05:11,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7324 states to 7324 states and 11721 transitions. [2022-01-10 18:05:11,513 INFO L78 Accepts]: Start accepts. Automaton has 7324 states and 11721 transitions. Word has length 65 [2022-01-10 18:05:11,513 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:05:11,513 INFO L470 AbstractCegarLoop]: Abstraction has 7324 states and 11721 transitions. [2022-01-10 18:05:11,513 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.222222222222222) internal successors, (65), 9 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:05:11,513 INFO L276 IsEmpty]: Start isEmpty. Operand 7324 states and 11721 transitions. [2022-01-10 18:05:11,523 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-01-10 18:05:11,523 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:05:11,524 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 18:05:11,524 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-01-10 18:05:11,524 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-01-10 18:05:11,524 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:05:11,524 INFO L85 PathProgramCache]: Analyzing trace with hash -2064709977, now seen corresponding path program 1 times [2022-01-10 18:05:11,524 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:05:11,524 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1488738798] [2022-01-10 18:05:11,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:05:11,525 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:05:11,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:05:11,633 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 18:05:11,634 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:05:11,634 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1488738798] [2022-01-10 18:05:11,635 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1488738798] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:05:11,635 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:05:11,635 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-10 18:05:11,635 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [431321602] [2022-01-10 18:05:11,635 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:05:11,635 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-10 18:05:11,636 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:05:11,636 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-10 18:05:11,636 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-01-10 18:05:11,636 INFO L87 Difference]: Start difference. First operand 7324 states and 11721 transitions. Second operand has 8 states, 8 states have (on average 8.125) internal successors, (65), 8 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:05:12,675 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:05:12,675 INFO L93 Difference]: Finished difference Result 11351 states and 17997 transitions. [2022-01-10 18:05:12,675 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-01-10 18:05:12,675 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 8.125) internal successors, (65), 8 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 65 [2022-01-10 18:05:12,675 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:05:12,687 INFO L225 Difference]: With dead ends: 11351 [2022-01-10 18:05:12,688 INFO L226 Difference]: Without dead ends: 7358 [2022-01-10 18:05:12,695 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=80, Invalid=160, Unknown=0, NotChecked=0, Total=240 [2022-01-10 18:05:12,695 INFO L933 BasicCegarLoop]: 729 mSDtfsCounter, 1255 mSDsluCounter, 3115 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1255 SdHoareTripleChecker+Valid, 3844 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 18:05:12,695 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1255 Valid, 3844 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 18:05:12,701 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7358 states. [2022-01-10 18:05:13,682 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7358 to 7324. [2022-01-10 18:05:13,703 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7324 states, 7320 states have (on average 1.5913934426229508) internal successors, (11649), 7323 states have internal predecessors, (11649), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:05:13,715 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7324 states to 7324 states and 11649 transitions. [2022-01-10 18:05:13,716 INFO L78 Accepts]: Start accepts. Automaton has 7324 states and 11649 transitions. Word has length 65 [2022-01-10 18:05:13,716 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:05:13,716 INFO L470 AbstractCegarLoop]: Abstraction has 7324 states and 11649 transitions. [2022-01-10 18:05:13,716 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.125) internal successors, (65), 8 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:05:13,716 INFO L276 IsEmpty]: Start isEmpty. Operand 7324 states and 11649 transitions. [2022-01-10 18:05:13,741 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-01-10 18:05:13,742 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:05:13,742 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 18:05:13,742 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-01-10 18:05:13,742 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-01-10 18:05:13,742 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:05:13,742 INFO L85 PathProgramCache]: Analyzing trace with hash 2033743814, now seen corresponding path program 1 times [2022-01-10 18:05:13,742 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:05:13,743 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1430845657] [2022-01-10 18:05:13,743 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:05:13,743 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:05:13,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:05:13,847 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 18:05:13,847 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:05:13,847 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1430845657] [2022-01-10 18:05:13,847 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1430845657] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:05:13,847 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:05:13,848 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 18:05:13,848 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [939214825] [2022-01-10 18:05:13,848 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:05:13,848 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 18:05:13,848 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:05:13,849 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 18:05:13,849 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 18:05:13,849 INFO L87 Difference]: Start difference. First operand 7324 states and 11649 transitions. Second operand has 5 states, 5 states have (on average 13.0) internal successors, (65), 5 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:05:15,712 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:05:15,713 INFO L93 Difference]: Finished difference Result 14193 states and 22136 transitions. [2022-01-10 18:05:15,713 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-10 18:05:15,713 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.0) internal successors, (65), 5 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 65 [2022-01-10 18:05:15,713 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:05:15,727 INFO L225 Difference]: With dead ends: 14193 [2022-01-10 18:05:15,727 INFO L226 Difference]: Without dead ends: 12134 [2022-01-10 18:05:15,731 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 18:05:15,731 INFO L933 BasicCegarLoop]: 989 mSDtfsCounter, 495 mSDsluCounter, 2250 mSDsCounter, 0 mSdLazyCounter, 68 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 495 SdHoareTripleChecker+Valid, 3239 SdHoareTripleChecker+Invalid, 76 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 68 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 18:05:15,731 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [495 Valid, 3239 Invalid, 76 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 68 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 18:05:15,738 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12134 states. [2022-01-10 18:05:16,705 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12134 to 7368. [2022-01-10 18:05:16,714 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7368 states, 7364 states have (on average 1.580526887561108) internal successors, (11639), 7367 states have internal predecessors, (11639), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:05:16,724 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7368 states to 7368 states and 11639 transitions. [2022-01-10 18:05:16,724 INFO L78 Accepts]: Start accepts. Automaton has 7368 states and 11639 transitions. Word has length 65 [2022-01-10 18:05:16,725 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:05:16,725 INFO L470 AbstractCegarLoop]: Abstraction has 7368 states and 11639 transitions. [2022-01-10 18:05:16,725 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.0) internal successors, (65), 5 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:05:16,725 INFO L276 IsEmpty]: Start isEmpty. Operand 7368 states and 11639 transitions. [2022-01-10 18:05:16,733 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-01-10 18:05:16,733 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:05:16,733 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 18:05:16,733 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-01-10 18:05:16,733 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-01-10 18:05:16,733 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:05:16,734 INFO L85 PathProgramCache]: Analyzing trace with hash 1455323689, now seen corresponding path program 1 times [2022-01-10 18:05:16,734 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:05:16,734 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1077274094] [2022-01-10 18:05:16,734 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:05:16,734 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:05:16,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:05:16,786 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 18:05:16,786 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:05:16,786 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1077274094] [2022-01-10 18:05:16,786 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1077274094] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:05:16,786 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:05:16,786 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 18:05:16,787 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1036888994] [2022-01-10 18:05:16,787 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:05:16,787 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 18:05:16,787 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:05:16,787 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 18:05:16,788 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 18:05:16,788 INFO L87 Difference]: Start difference. First operand 7368 states and 11639 transitions. Second operand has 4 states, 4 states have (on average 16.25) internal successors, (65), 4 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:05:18,075 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:05:18,076 INFO L93 Difference]: Finished difference Result 11127 states and 17111 transitions. [2022-01-10 18:05:18,076 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 18:05:18,076 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.25) internal successors, (65), 4 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 65 [2022-01-10 18:05:18,076 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:05:18,087 INFO L225 Difference]: With dead ends: 11127 [2022-01-10 18:05:18,087 INFO L226 Difference]: Without dead ends: 8389 [2022-01-10 18:05:18,090 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-10 18:05:18,091 INFO L933 BasicCegarLoop]: 706 mSDtfsCounter, 611 mSDsluCounter, 992 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 611 SdHoareTripleChecker+Valid, 1698 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 18:05:18,091 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [611 Valid, 1698 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 18:05:18,095 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8389 states. [2022-01-10 18:05:19,029 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8389 to 7368. [2022-01-10 18:05:19,036 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7368 states, 7364 states have (on average 1.5794405214557306) internal successors, (11631), 7367 states have internal predecessors, (11631), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:05:19,046 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7368 states to 7368 states and 11631 transitions. [2022-01-10 18:05:19,046 INFO L78 Accepts]: Start accepts. Automaton has 7368 states and 11631 transitions. Word has length 65 [2022-01-10 18:05:19,047 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:05:19,047 INFO L470 AbstractCegarLoop]: Abstraction has 7368 states and 11631 transitions. [2022-01-10 18:05:19,047 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.25) internal successors, (65), 4 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:05:19,047 INFO L276 IsEmpty]: Start isEmpty. Operand 7368 states and 11631 transitions. [2022-01-10 18:05:19,053 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-01-10 18:05:19,053 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:05:19,053 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 18:05:19,053 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-01-10 18:05:19,053 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-01-10 18:05:19,053 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:05:19,054 INFO L85 PathProgramCache]: Analyzing trace with hash 1200587144, now seen corresponding path program 1 times [2022-01-10 18:05:19,054 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:05:19,054 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1603226624] [2022-01-10 18:05:19,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:05:19,054 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:05:19,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:05:19,135 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 18:05:19,135 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:05:19,135 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1603226624] [2022-01-10 18:05:19,136 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1603226624] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:05:19,136 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:05:19,136 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 18:05:19,136 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1956082760] [2022-01-10 18:05:19,136 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:05:19,137 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-10 18:05:19,137 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:05:19,137 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-10 18:05:19,137 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-01-10 18:05:19,137 INFO L87 Difference]: Start difference. First operand 7368 states and 11631 transitions. Second operand has 6 states, 6 states have (on average 10.833333333333334) internal successors, (65), 5 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:05:21,295 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:05:21,295 INFO L93 Difference]: Finished difference Result 12687 states and 19260 transitions. [2022-01-10 18:05:21,295 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-01-10 18:05:21,296 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.833333333333334) internal successors, (65), 5 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 65 [2022-01-10 18:05:21,296 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:05:21,312 INFO L225 Difference]: With dead ends: 12687 [2022-01-10 18:05:21,312 INFO L226 Difference]: Without dead ends: 11636 [2022-01-10 18:05:21,317 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=66, Invalid=144, Unknown=0, NotChecked=0, Total=210 [2022-01-10 18:05:21,318 INFO L933 BasicCegarLoop]: 1298 mSDtfsCounter, 1159 mSDsluCounter, 3105 mSDsCounter, 0 mSdLazyCounter, 130 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1159 SdHoareTripleChecker+Valid, 4403 SdHoareTripleChecker+Invalid, 141 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 130 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 18:05:21,318 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1159 Valid, 4403 Invalid, 141 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 130 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 18:05:21,326 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11636 states. [2022-01-10 18:05:22,528 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11636 to 7702. [2022-01-10 18:05:22,537 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7702 states, 7698 states have (on average 1.5504027020005196) internal successors, (11935), 7701 states have internal predecessors, (11935), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:05:22,547 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7702 states to 7702 states and 11935 transitions. [2022-01-10 18:05:22,547 INFO L78 Accepts]: Start accepts. Automaton has 7702 states and 11935 transitions. Word has length 65 [2022-01-10 18:05:22,548 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:05:22,548 INFO L470 AbstractCegarLoop]: Abstraction has 7702 states and 11935 transitions. [2022-01-10 18:05:22,548 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.833333333333334) internal successors, (65), 5 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:05:22,548 INFO L276 IsEmpty]: Start isEmpty. Operand 7702 states and 11935 transitions. [2022-01-10 18:05:22,553 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-01-10 18:05:22,553 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:05:22,554 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 18:05:22,554 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-01-10 18:05:22,554 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-01-10 18:05:22,554 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:05:22,554 INFO L85 PathProgramCache]: Analyzing trace with hash 1277383221, now seen corresponding path program 1 times [2022-01-10 18:05:22,554 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:05:22,554 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1200810058] [2022-01-10 18:05:22,554 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:05:22,555 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:05:22,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:05:22,641 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 18:05:22,642 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:05:22,642 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1200810058] [2022-01-10 18:05:22,642 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1200810058] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:05:22,642 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:05:22,642 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 18:05:22,642 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [168556147] [2022-01-10 18:05:22,642 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:05:22,642 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 18:05:22,642 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:05:22,643 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 18:05:22,643 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 18:05:22,643 INFO L87 Difference]: Start difference. First operand 7702 states and 11935 transitions. Second operand has 5 states, 5 states have (on average 13.2) internal successors, (66), 4 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:05:27,305 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:05:27,305 INFO L93 Difference]: Finished difference Result 26975 states and 40306 transitions. [2022-01-10 18:05:27,305 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 18:05:27,305 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.2) internal successors, (66), 4 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 66 [2022-01-10 18:05:27,305 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:05:27,335 INFO L225 Difference]: With dead ends: 26975 [2022-01-10 18:05:27,335 INFO L226 Difference]: Without dead ends: 23796 [2022-01-10 18:05:27,343 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 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 18:05:27,343 INFO L933 BasicCegarLoop]: 891 mSDtfsCounter, 1172 mSDsluCounter, 2166 mSDsCounter, 0 mSdLazyCounter, 136 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1172 SdHoareTripleChecker+Valid, 3057 SdHoareTripleChecker+Invalid, 145 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 136 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 18:05:27,343 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1172 Valid, 3057 Invalid, 145 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 136 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 18:05:27,358 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23796 states. [2022-01-10 18:05:29,888 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23796 to 15211. [2022-01-10 18:05:29,901 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15211 states, 15207 states have (on average 1.5502729006378642) internal successors, (23575), 15210 states have internal predecessors, (23575), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:05:29,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15211 states to 15211 states and 23575 transitions. [2022-01-10 18:05:29,923 INFO L78 Accepts]: Start accepts. Automaton has 15211 states and 23575 transitions. Word has length 66 [2022-01-10 18:05:29,923 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:05:29,923 INFO L470 AbstractCegarLoop]: Abstraction has 15211 states and 23575 transitions. [2022-01-10 18:05:29,923 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.2) internal successors, (66), 4 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:05:29,923 INFO L276 IsEmpty]: Start isEmpty. Operand 15211 states and 23575 transitions. [2022-01-10 18:05:29,932 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-01-10 18:05:29,932 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:05:29,932 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 18:05:29,932 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-01-10 18:05:29,932 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-01-10 18:05:29,933 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:05:29,933 INFO L85 PathProgramCache]: Analyzing trace with hash 1277413012, now seen corresponding path program 1 times [2022-01-10 18:05:29,933 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:05:29,933 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [760937833] [2022-01-10 18:05:29,933 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:05:29,933 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:05:29,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:05:30,042 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 18:05:30,042 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:05:30,042 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [760937833] [2022-01-10 18:05:30,042 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [760937833] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:05:30,042 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:05:30,043 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 18:05:30,043 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [302758942] [2022-01-10 18:05:30,043 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:05:30,043 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 18:05:30,043 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:05:30,043 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 18:05:30,043 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 18:05:30,044 INFO L87 Difference]: Start difference. First operand 15211 states and 23575 transitions. Second operand has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:05:32,426 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:05:32,426 INFO L93 Difference]: Finished difference Result 20998 states and 32085 transitions. [2022-01-10 18:05:32,426 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 18:05:32,427 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 66 [2022-01-10 18:05:32,427 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:05:32,443 INFO L225 Difference]: With dead ends: 20998 [2022-01-10 18:05:32,443 INFO L226 Difference]: Without dead ends: 15235 [2022-01-10 18:05:32,448 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 18:05:32,449 INFO L933 BasicCegarLoop]: 699 mSDtfsCounter, 1 mSDsluCounter, 697 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 1396 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 18:05:32,449 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1 Valid, 1396 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 18:05:32,456 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15235 states. [2022-01-10 18:05:34,784 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15235 to 15227. [2022-01-10 18:05:34,797 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15227 states, 15223 states have (on average 1.5496945411548315) internal successors, (23591), 15226 states have internal predecessors, (23591), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:05:34,817 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15227 states to 15227 states and 23591 transitions. [2022-01-10 18:05:34,818 INFO L78 Accepts]: Start accepts. Automaton has 15227 states and 23591 transitions. Word has length 66 [2022-01-10 18:05:34,818 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:05:34,818 INFO L470 AbstractCegarLoop]: Abstraction has 15227 states and 23591 transitions. [2022-01-10 18:05:34,818 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:05:34,818 INFO L276 IsEmpty]: Start isEmpty. Operand 15227 states and 23591 transitions. [2022-01-10 18:05:34,828 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2022-01-10 18:05:34,828 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:05:34,828 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 18:05:34,828 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-01-10 18:05:34,829 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-01-10 18:05:34,829 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:05:34,829 INFO L85 PathProgramCache]: Analyzing trace with hash 483004181, now seen corresponding path program 1 times [2022-01-10 18:05:34,829 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:05:34,829 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [154101475] [2022-01-10 18:05:34,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:05:34,829 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:05:34,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:05:34,870 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 18:05:34,871 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:05:34,871 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [154101475] [2022-01-10 18:05:34,871 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [154101475] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:05:34,871 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:05:34,871 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 18:05:34,871 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1863497718] [2022-01-10 18:05:34,871 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:05:34,872 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 18:05:34,872 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:05:34,872 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 18:05:34,872 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 18:05:34,872 INFO L87 Difference]: Start difference. First operand 15227 states and 23591 transitions. Second operand has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:05:39,666 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:05:39,667 INFO L93 Difference]: Finished difference Result 44491 states and 68813 transitions. [2022-01-10 18:05:39,667 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 18:05:39,667 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 75 [2022-01-10 18:05:39,667 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:05:39,709 INFO L225 Difference]: With dead ends: 44491 [2022-01-10 18:05:39,710 INFO L226 Difference]: Without dead ends: 29443 [2022-01-10 18:05:39,726 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 18:05:39,726 INFO L933 BasicCegarLoop]: 700 mSDtfsCounter, 650 mSDsluCounter, 602 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 650 SdHoareTripleChecker+Valid, 1302 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 18:05:39,726 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [650 Valid, 1302 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 18:05:39,744 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29443 states. [2022-01-10 18:05:42,383 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29443 to 17947. [2022-01-10 18:05:42,402 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17947 states, 17943 states have (on average 1.5849634955135707) internal successors, (28439), 17946 states have internal predecessors, (28439), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:05:42,431 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17947 states to 17947 states and 28439 transitions. [2022-01-10 18:05:42,431 INFO L78 Accepts]: Start accepts. Automaton has 17947 states and 28439 transitions. Word has length 75 [2022-01-10 18:05:42,431 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:05:42,431 INFO L470 AbstractCegarLoop]: Abstraction has 17947 states and 28439 transitions. [2022-01-10 18:05:42,432 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:05:42,432 INFO L276 IsEmpty]: Start isEmpty. Operand 17947 states and 28439 transitions. [2022-01-10 18:05:42,446 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2022-01-10 18:05:42,447 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:05:42,447 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 18:05:42,447 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-01-10 18:05:42,447 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-01-10 18:05:42,447 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:05:42,447 INFO L85 PathProgramCache]: Analyzing trace with hash 820327158, now seen corresponding path program 1 times [2022-01-10 18:05:42,447 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:05:42,448 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [120422450] [2022-01-10 18:05:42,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:05:42,448 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:05:42,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:05:42,508 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 18:05:42,508 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:05:42,508 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [120422450] [2022-01-10 18:05:42,508 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [120422450] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:05:42,508 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:05:42,509 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 18:05:42,509 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1408766973] [2022-01-10 18:05:42,509 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:05:42,509 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 18:05:42,509 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:05:42,509 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 18:05:42,509 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-01-10 18:05:42,509 INFO L87 Difference]: Start difference. First operand 17947 states and 28439 transitions. Second operand has 4 states, 4 states have (on average 19.0) internal successors, (76), 4 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:05:47,887 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:05:47,888 INFO L93 Difference]: Finished difference Result 53323 states and 84637 transitions. [2022-01-10 18:05:47,888 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 18:05:47,888 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 19.0) internal successors, (76), 4 states have internal predecessors, (76), 0 states have call successors, (0), 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 76 [2022-01-10 18:05:47,888 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:05:47,941 INFO L225 Difference]: With dead ends: 53323 [2022-01-10 18:05:47,941 INFO L226 Difference]: Without dead ends: 35555 [2022-01-10 18:05:47,958 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-01-10 18:05:47,959 INFO L933 BasicCegarLoop]: 1269 mSDtfsCounter, 1368 mSDsluCounter, 684 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1368 SdHoareTripleChecker+Valid, 1953 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 18:05:47,960 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1368 Valid, 1953 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 18:05:47,981 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35555 states. [2022-01-10 18:05:50,917 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35555 to 17947. [2022-01-10 18:05:50,934 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17947 states, 17943 states have (on average 1.5831800702223708) internal successors, (28407), 17946 states have internal predecessors, (28407), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:05:50,965 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17947 states to 17947 states and 28407 transitions. [2022-01-10 18:05:50,965 INFO L78 Accepts]: Start accepts. Automaton has 17947 states and 28407 transitions. Word has length 76 [2022-01-10 18:05:50,965 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:05:50,965 INFO L470 AbstractCegarLoop]: Abstraction has 17947 states and 28407 transitions. [2022-01-10 18:05:50,965 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.0) internal successors, (76), 4 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:05:50,965 INFO L276 IsEmpty]: Start isEmpty. Operand 17947 states and 28407 transitions. [2022-01-10 18:05:50,979 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-01-10 18:05:50,979 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:05:50,979 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 18:05:50,980 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-01-10 18:05:50,980 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-01-10 18:05:50,980 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:05:50,980 INFO L85 PathProgramCache]: Analyzing trace with hash -1740626230, now seen corresponding path program 1 times [2022-01-10 18:05:50,980 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:05:50,980 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2065781665] [2022-01-10 18:05:50,980 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:05:50,980 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:05:51,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:05:51,086 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 18:05:51,086 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:05:51,087 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2065781665] [2022-01-10 18:05:51,088 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2065781665] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-10 18:05:51,088 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [624141456] [2022-01-10 18:05:51,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:05:51,088 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 18:05:51,088 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 18:05:51,092 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-10 18:05:51,095 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-01-10 18:05:51,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:05:51,453 INFO L263 TraceCheckSpWp]: Trace formula consists of 1645 conjuncts, 6 conjunts are in the unsatisfiable core [2022-01-10 18:05:51,459 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 18:05:51,766 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 18:05:51,767 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-10 18:05:51,942 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 18:05:51,942 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [624141456] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-10 18:05:51,942 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-10 18:05:51,942 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2022-01-10 18:05:51,943 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1645463106] [2022-01-10 18:05:51,943 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-10 18:05:51,944 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-10 18:05:51,944 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:05:51,945 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-10 18:05:51,945 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-01-10 18:05:51,945 INFO L87 Difference]: Start difference. First operand 17947 states and 28407 transitions. Second operand has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 7 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)