/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data --core.log.level.for.class de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN -tc ../../../trunk/examples/toolchains/AutomizerCInlineTransformed.xml -s ../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_BvToInt_BITWISE.epf -i ../../../trunk/examples/svcomp/product-lines/email_spec0_product31.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-a10ec3b [2022-01-10 12:09:52,903 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-10 12:09:52,905 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-10 12:09:52,965 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-01-10 12:09:52,966 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-01-10 12:09:52,967 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-01-10 12:09:52,968 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-01-10 12:09:52,970 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-01-10 12:09:52,976 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-01-10 12:09:52,981 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-01-10 12:09:52,982 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-01-10 12:09:52,983 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-01-10 12:09:52,983 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-10 12:09:52,984 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-10 12:09:52,985 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-10 12:09:52,985 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-10 12:09:52,986 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-10 12:09:52,987 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-10 12:09:52,988 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-10 12:09:52,990 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-10 12:09:52,991 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-10 12:09:52,995 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-10 12:09:52,996 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-10 12:09:52,996 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-10 12:09:52,998 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-01-10 12:09:52,999 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-01-10 12:09:52,999 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-01-10 12:09:53,000 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-01-10 12:09:53,000 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-01-10 12:09:53,001 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-01-10 12:09:53,001 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-01-10 12:09:53,002 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-01-10 12:09:53,002 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-01-10 12:09:53,003 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-01-10 12:09:53,004 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-01-10 12:09:53,004 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-01-10 12:09:53,004 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-01-10 12:09:53,005 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-01-10 12:09:53,005 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-10 12:09:53,005 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-10 12:09:53,006 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-10 12:09:53,007 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_BvToInt_BITWISE.epf [2022-01-10 12:09:53,027 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-10 12:09:53,028 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-10 12:09:53,028 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-10 12:09:53,028 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-10 12:09:53,030 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-10 12:09:53,030 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-10 12:09:53,030 INFO L138 SettingsManager]: * Use SBE=true [2022-01-10 12:09:53,030 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-10 12:09:53,030 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-10 12:09:53,030 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-10 12:09:53,031 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-10 12:09:53,031 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-10 12:09:53,031 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-10 12:09:53,032 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-01-10 12:09:53,032 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-01-10 12:09:53,032 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-01-10 12:09:53,032 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-10 12:09:53,032 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-10 12:09:53,032 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-10 12:09:53,032 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-10 12:09:53,032 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-10 12:09:53,034 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 12:09:53,034 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-10 12:09:53,034 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-10 12:09:53,034 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-10 12:09:53,034 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-10 12:09:53,034 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-01-10 12:09:53,034 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-10 12:09:53,034 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-10 12:09:53,035 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-10 12:09:53,035 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-01-10 12:09:53,035 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-01-10 12:09:53,036 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-01-10 12:09:53,036 INFO L138 SettingsManager]: * TransformationType=BV_TO_INT_BITWISE WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-10 12:09:53,309 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-10 12:09:53,343 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-10 12:09:53,345 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-10 12:09:53,346 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-10 12:09:53,347 INFO L275 PluginConnector]: CDTParser initialized [2022-01-10 12:09:53,348 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/email_spec0_product31.cil.c [2022-01-10 12:09:53,416 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e5ab495f3/c7d1dd9f30fc4001ba2bc84e0ee9f2a5/FLAG58d433849 [2022-01-10 12:09:54,042 INFO L306 CDTParser]: Found 1 translation units. [2022-01-10 12:09:54,043 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/email_spec0_product31.cil.c [2022-01-10 12:09:54,066 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e5ab495f3/c7d1dd9f30fc4001ba2bc84e0ee9f2a5/FLAG58d433849 [2022-01-10 12:09:54,432 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e5ab495f3/c7d1dd9f30fc4001ba2bc84e0ee9f2a5 [2022-01-10 12:09:54,434 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-10 12:09:54,436 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-01-10 12:09:54,442 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-10 12:09:54,443 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-10 12:09:54,449 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-10 12:09:54,450 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 12:09:54" (1/1) ... [2022-01-10 12:09:54,450 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4f5dae94 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:09:54, skipping insertion in model container [2022-01-10 12:09:54,451 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 12:09:54" (1/1) ... [2022-01-10 12:09:54,458 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-10 12:09:54,528 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-10 12:09:54,957 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_spec0_product31.cil.c[35932,35945] [2022-01-10 12:09:55,036 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 12:09:55,048 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2022-01-10 12:09:55,068 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-10 12:09:55,156 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_spec0_product31.cil.c[35932,35945] [2022-01-10 12:09:55,177 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 12:09:55,188 INFO L203 MainTranslator]: Completed pre-run [2022-01-10 12:09:55,259 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_spec0_product31.cil.c[35932,35945] [2022-01-10 12:09:55,289 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 12:09:55,330 INFO L208 MainTranslator]: Completed translation [2022-01-10 12:09:55,331 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:09:55 WrapperNode [2022-01-10 12:09:55,331 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-10 12:09:55,332 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-10 12:09:55,333 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-10 12:09:55,333 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-10 12:09:55,340 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:09:55" (1/1) ... [2022-01-10 12:09:55,391 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:09:55" (1/1) ... [2022-01-10 12:09:55,517 INFO L137 Inliner]: procedures = 133, calls = 217, calls flagged for inlining = 128, calls inlined = 189, statements flattened = 2799 [2022-01-10 12:09:55,518 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-10 12:09:55,519 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-10 12:09:55,519 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-10 12:09:55,520 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-10 12:09:55,528 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:09:55" (1/1) ... [2022-01-10 12:09:55,528 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:09:55" (1/1) ... [2022-01-10 12:09:55,541 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:09:55" (1/1) ... [2022-01-10 12:09:55,542 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:09:55" (1/1) ... [2022-01-10 12:09:55,597 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:09:55" (1/1) ... [2022-01-10 12:09:55,614 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:09:55" (1/1) ... [2022-01-10 12:09:55,621 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:09:55" (1/1) ... [2022-01-10 12:09:55,633 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-10 12:09:55,635 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-10 12:09:55,635 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-10 12:09:55,635 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-10 12:09:55,639 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:09:55" (1/1) ... [2022-01-10 12:09:55,650 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 12:09:55,662 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 12:09:55,675 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-01-10 12:09:55,678 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-01-10 12:09:55,723 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2022-01-10 12:09:55,723 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-10 12:09:55,724 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-01-10 12:09:55,724 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-10 12:09:55,724 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-10 12:09:55,993 INFO L234 CfgBuilder]: Building ICFG [2022-01-10 12:09:55,995 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-10 12:09:57,561 INFO L275 CfgBuilder]: Performing block encoding [2022-01-10 12:09:57,573 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-10 12:09:57,573 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-01-10 12:09:57,576 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 12:09:57 BoogieIcfgContainer [2022-01-10 12:09:57,576 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-10 12:09:57,577 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2022-01-10 12:09:57,577 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2022-01-10 12:09:57,578 INFO L275 PluginConnector]: IcfgTransformer initialized [2022-01-10 12:09:57,581 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 12:09:57" (1/1) ... [2022-01-10 12:09:58,013 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 10.01 12:09:58 BasicIcfg [2022-01-10 12:09:58,014 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2022-01-10 12:09:58,017 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-10 12:09:58,017 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-10 12:09:58,022 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-10 12:09:58,022 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.01 12:09:54" (1/4) ... [2022-01-10 12:09:58,023 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5e62b32f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 12:09:58, skipping insertion in model container [2022-01-10 12:09:58,023 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:09:55" (2/4) ... [2022-01-10 12:09:58,023 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5e62b32f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 12:09:58, skipping insertion in model container [2022-01-10 12:09:58,023 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 12:09:57" (3/4) ... [2022-01-10 12:09:58,024 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5e62b32f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.01 12:09:58, skipping insertion in model container [2022-01-10 12:09:58,024 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 10.01 12:09:58" (4/4) ... [2022-01-10 12:09:58,025 INFO L111 eAbstractionObserver]: Analyzing ICFG email_spec0_product31.cil.cTransformedIcfg [2022-01-10 12:09:58,030 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-10 12:09:58,030 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-01-10 12:09:58,085 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-10 12:09:58,093 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2022-01-10 12:09:58,093 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-01-10 12:09:58,125 INFO L276 IsEmpty]: Start isEmpty. Operand has 612 states, 609 states have (on average 1.6732348111658457) internal successors, (1019), 611 states have internal predecessors, (1019), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:09:58,147 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-01-10 12:09:58,147 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:09:58,148 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 12:09:58,149 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 12:09:58,157 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:09:58,158 INFO L85 PathProgramCache]: Analyzing trace with hash -1056274179, now seen corresponding path program 1 times [2022-01-10 12:09:58,166 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:09:58,166 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [885489002] [2022-01-10 12:09:58,167 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:09:58,167 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:09:58,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:09:58,604 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 12:09:58,604 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:09:58,605 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [885489002] [2022-01-10 12:09:58,605 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [885489002] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:09:58,605 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:09:58,605 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 12:09:58,607 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [83954712] [2022-01-10 12:09:58,608 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:09:58,611 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-01-10 12:09:58,612 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:09:58,649 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-01-10 12:09:58,651 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-01-10 12:09:58,655 INFO L87 Difference]: Start difference. First operand has 612 states, 609 states have (on average 1.6732348111658457) internal successors, (1019), 611 states have internal predecessors, (1019), 0 states have call successors, (0), 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 36.0) internal successors, (72), 2 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:09:58,723 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:09:58,724 INFO L93 Difference]: Finished difference Result 963 states and 1578 transitions. [2022-01-10 12:09:58,725 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-01-10 12:09:58,727 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 36.0) internal successors, (72), 2 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 72 [2022-01-10 12:09:58,727 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:09:58,747 INFO L225 Difference]: With dead ends: 963 [2022-01-10 12:09:58,747 INFO L226 Difference]: Without dead ends: 560 [2022-01-10 12:09:58,752 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-01-10 12:09:58,760 INFO L933 BasicCegarLoop]: 1013 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, 1013 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 12:09:58,766 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 1013 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 12:09:58,786 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 560 states. [2022-01-10 12:09:58,851 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 560 to 560. [2022-01-10 12:09:58,854 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 560 states, 558 states have (on average 1.6863799283154122) internal successors, (941), 559 states have internal predecessors, (941), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:09:58,858 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 560 states to 560 states and 941 transitions. [2022-01-10 12:09:58,860 INFO L78 Accepts]: Start accepts. Automaton has 560 states and 941 transitions. Word has length 72 [2022-01-10 12:09:58,860 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:09:58,860 INFO L470 AbstractCegarLoop]: Abstraction has 560 states and 941 transitions. [2022-01-10 12:09:58,861 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 36.0) internal successors, (72), 2 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:09:58,863 INFO L276 IsEmpty]: Start isEmpty. Operand 560 states and 941 transitions. [2022-01-10 12:09:58,870 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2022-01-10 12:09:58,870 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:09:58,870 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 12:09:58,871 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-10 12:09:58,871 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 12:09:58,872 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:09:58,873 INFO L85 PathProgramCache]: Analyzing trace with hash -1948339621, now seen corresponding path program 1 times [2022-01-10 12:09:58,873 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:09:58,873 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2101532187] [2022-01-10 12:09:58,874 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:09:58,874 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:09:59,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:09:59,156 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 12:09:59,156 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:09:59,156 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2101532187] [2022-01-10 12:09:59,157 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2101532187] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:09:59,157 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:09:59,158 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 12:09:59,158 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [10631435] [2022-01-10 12:09:59,158 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:09:59,160 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 12:09:59,160 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:09:59,161 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 12:09:59,164 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 12:09:59,165 INFO L87 Difference]: Start difference. First operand 560 states and 941 transitions. Second operand has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:09:59,280 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:09:59,280 INFO L93 Difference]: Finished difference Result 1101 states and 1854 transitions. [2022-01-10 12:09:59,281 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 12:09:59,281 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 0 states have call successors, (0), 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 73 [2022-01-10 12:09:59,281 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:09:59,284 INFO L225 Difference]: With dead ends: 1101 [2022-01-10 12:09:59,284 INFO L226 Difference]: Without dead ends: 560 [2022-01-10 12:09:59,287 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 12:09:59,288 INFO L933 BasicCegarLoop]: 922 mSDtfsCounter, 916 mSDsluCounter, 13 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 916 SdHoareTripleChecker+Valid, 935 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 12:09:59,288 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [916 Valid, 935 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 12:09:59,290 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 560 states. [2022-01-10 12:09:59,364 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 560 to 560. [2022-01-10 12:09:59,370 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 560 states, 558 states have (on average 1.6827956989247312) internal successors, (939), 559 states have internal predecessors, (939), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:09:59,372 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 560 states to 560 states and 939 transitions. [2022-01-10 12:09:59,373 INFO L78 Accepts]: Start accepts. Automaton has 560 states and 939 transitions. Word has length 73 [2022-01-10 12:09:59,373 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:09:59,374 INFO L470 AbstractCegarLoop]: Abstraction has 560 states and 939 transitions. [2022-01-10 12:09:59,376 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:09:59,377 INFO L276 IsEmpty]: Start isEmpty. Operand 560 states and 939 transitions. [2022-01-10 12:09:59,384 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2022-01-10 12:09:59,384 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:09:59,384 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 12:09:59,384 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-01-10 12:09:59,385 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 12:09:59,386 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:09:59,386 INFO L85 PathProgramCache]: Analyzing trace with hash -1693535269, now seen corresponding path program 1 times [2022-01-10 12:09:59,386 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:09:59,386 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [641406755] [2022-01-10 12:09:59,387 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:09:59,387 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:09:59,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:09:59,634 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 12:09:59,634 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:09:59,634 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [641406755] [2022-01-10 12:09:59,635 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [641406755] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:09:59,635 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:09:59,635 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 12:09:59,635 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1932306946] [2022-01-10 12:09:59,636 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:09:59,636 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 12:09:59,636 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:09:59,637 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 12:09:59,637 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 12:09:59,637 INFO L87 Difference]: Start difference. First operand 560 states and 939 transitions. Second operand has 5 states, 5 states have (on average 15.0) internal successors, (75), 5 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 12:09:59,946 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:09:59,946 INFO L93 Difference]: Finished difference Result 2668 states and 4491 transitions. [2022-01-10 12:09:59,946 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-10 12:09:59,947 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.0) internal successors, (75), 5 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 12:09:59,947 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:09:59,960 INFO L225 Difference]: With dead ends: 2668 [2022-01-10 12:09:59,960 INFO L226 Difference]: Without dead ends: 2132 [2022-01-10 12:09:59,966 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-01-10 12:09:59,971 INFO L933 BasicCegarLoop]: 1801 mSDtfsCounter, 4478 mSDsluCounter, 2689 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4478 SdHoareTripleChecker+Valid, 4490 SdHoareTripleChecker+Invalid, 82 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 62 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 12:09:59,972 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4478 Valid, 4490 Invalid, 82 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 62 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 12:09:59,977 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2132 states. [2022-01-10 12:10:00,034 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2132 to 560. [2022-01-10 12:10:00,036 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 560 states, 558 states have (on average 1.6810035842293907) internal successors, (938), 559 states have internal predecessors, (938), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:10:00,038 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 560 states to 560 states and 938 transitions. [2022-01-10 12:10:00,038 INFO L78 Accepts]: Start accepts. Automaton has 560 states and 938 transitions. Word has length 75 [2022-01-10 12:10:00,039 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:10:00,039 INFO L470 AbstractCegarLoop]: Abstraction has 560 states and 938 transitions. [2022-01-10 12:10:00,039 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.0) internal successors, (75), 5 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 12:10:00,039 INFO L276 IsEmpty]: Start isEmpty. Operand 560 states and 938 transitions. [2022-01-10 12:10:00,041 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2022-01-10 12:10:00,041 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:10:00,041 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 12:10:00,041 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-01-10 12:10:00,041 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 12:10:00,042 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:10:00,042 INFO L85 PathProgramCache]: Analyzing trace with hash -502941341, now seen corresponding path program 1 times [2022-01-10 12:10:00,042 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:10:00,042 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [456478553] [2022-01-10 12:10:00,042 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:10:00,043 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:10:00,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:10:00,165 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 12:10:00,166 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:10:00,166 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [456478553] [2022-01-10 12:10:00,166 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [456478553] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:10:00,166 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:10:00,166 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 12:10:00,166 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1661893878] [2022-01-10 12:10:00,166 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:10:00,167 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 12:10:00,167 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:10:00,168 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 12:10:00,168 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 12:10:00,168 INFO L87 Difference]: Start difference. First operand 560 states and 938 transitions. Second operand has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 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 12:10:00,247 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:10:00,247 INFO L93 Difference]: Finished difference Result 1105 states and 1854 transitions. [2022-01-10 12:10:00,248 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 12:10:00,248 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 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 12:10:00,248 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:10:00,251 INFO L225 Difference]: With dead ends: 1105 [2022-01-10 12:10:00,251 INFO L226 Difference]: Without dead ends: 574 [2022-01-10 12:10:00,252 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 12:10:00,253 INFO L933 BasicCegarLoop]: 952 mSDtfsCounter, 917 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 917 SdHoareTripleChecker+Valid, 974 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 12:10:00,253 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [917 Valid, 974 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 12:10:00,255 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 574 states. [2022-01-10 12:10:00,289 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 574 to 560. [2022-01-10 12:10:00,290 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 560 states, 558 states have (on average 1.67921146953405) internal successors, (937), 559 states have internal predecessors, (937), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:10:00,292 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 560 states to 560 states and 937 transitions. [2022-01-10 12:10:00,292 INFO L78 Accepts]: Start accepts. Automaton has 560 states and 937 transitions. Word has length 76 [2022-01-10 12:10:00,292 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:10:00,293 INFO L470 AbstractCegarLoop]: Abstraction has 560 states and 937 transitions. [2022-01-10 12:10:00,293 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 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 12:10:00,293 INFO L276 IsEmpty]: Start isEmpty. Operand 560 states and 937 transitions. [2022-01-10 12:10:00,294 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-01-10 12:10:00,294 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:10:00,295 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 12:10:00,295 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-01-10 12:10:00,295 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 12:10:00,296 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:10:00,296 INFO L85 PathProgramCache]: Analyzing trace with hash 535637628, now seen corresponding path program 1 times [2022-01-10 12:10:00,296 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:10:00,296 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [324149153] [2022-01-10 12:10:00,296 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:10:00,296 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:10:00,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:10:00,425 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 12:10:00,425 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:10:00,426 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [324149153] [2022-01-10 12:10:00,426 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [324149153] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:10:00,426 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:10:00,426 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 12:10:00,426 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [736200307] [2022-01-10 12:10:00,426 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:10:00,427 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 12:10:00,427 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:10:00,427 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 12:10:00,427 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 12:10:00,428 INFO L87 Difference]: Start difference. First operand 560 states and 937 transitions. Second operand has 5 states, 5 states have (on average 15.4) internal successors, (77), 5 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:10:00,619 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:10:00,619 INFO L93 Difference]: Finished difference Result 1614 states and 2711 transitions. [2022-01-10 12:10:00,620 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 12:10:00,620 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.4) internal successors, (77), 5 states have internal predecessors, (77), 0 states have call successors, (0), 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 77 [2022-01-10 12:10:00,620 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:10:00,625 INFO L225 Difference]: With dead ends: 1614 [2022-01-10 12:10:00,625 INFO L226 Difference]: Without dead ends: 1088 [2022-01-10 12:10:00,626 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-01-10 12:10:00,627 INFO L933 BasicCegarLoop]: 946 mSDtfsCounter, 4401 mSDsluCounter, 960 mSDsCounter, 0 mSdLazyCounter, 67 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4401 SdHoareTripleChecker+Valid, 1906 SdHoareTripleChecker+Invalid, 74 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 67 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 12:10:00,627 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4401 Valid, 1906 Invalid, 74 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 67 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 12:10:00,630 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1088 states. [2022-01-10 12:10:00,669 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1088 to 560. [2022-01-10 12:10:00,673 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 560 states, 558 states have (on average 1.6756272401433692) internal successors, (935), 559 states have internal predecessors, (935), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:10:00,678 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 560 states to 560 states and 935 transitions. [2022-01-10 12:10:00,679 INFO L78 Accepts]: Start accepts. Automaton has 560 states and 935 transitions. Word has length 77 [2022-01-10 12:10:00,679 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:10:00,679 INFO L470 AbstractCegarLoop]: Abstraction has 560 states and 935 transitions. [2022-01-10 12:10:00,679 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.4) internal successors, (77), 5 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:10:00,680 INFO L276 IsEmpty]: Start isEmpty. Operand 560 states and 935 transitions. [2022-01-10 12:10:00,681 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-10 12:10:00,681 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:10:00,681 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 12:10:00,681 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-01-10 12:10:00,681 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 12:10:00,682 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:10:00,682 INFO L85 PathProgramCache]: Analyzing trace with hash 1380573657, now seen corresponding path program 1 times [2022-01-10 12:10:00,682 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:10:00,682 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1763513808] [2022-01-10 12:10:00,682 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:10:00,683 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:10:00,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:10:00,872 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 12:10:00,873 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:10:00,873 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1763513808] [2022-01-10 12:10:00,873 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1763513808] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:10:00,873 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:10:00,873 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-10 12:10:00,873 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2090125299] [2022-01-10 12:10:00,874 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:10:00,874 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-10 12:10:00,874 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:10:00,875 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-10 12:10:00,875 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-01-10 12:10:00,875 INFO L87 Difference]: Start difference. First operand 560 states and 935 transitions. Second operand has 6 states, 6 states have (on average 13.166666666666666) internal successors, (79), 6 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:10:01,473 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:10:01,473 INFO L93 Difference]: Finished difference Result 3778 states and 6205 transitions. [2022-01-10 12:10:01,474 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-01-10 12:10:01,474 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 13.166666666666666) internal successors, (79), 6 states have internal predecessors, (79), 0 states have call successors, (0), 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 79 [2022-01-10 12:10:01,476 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:10:01,492 INFO L225 Difference]: With dead ends: 3778 [2022-01-10 12:10:01,492 INFO L226 Difference]: Without dead ends: 3496 [2022-01-10 12:10:01,495 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2022-01-10 12:10:01,497 INFO L933 BasicCegarLoop]: 1529 mSDtfsCounter, 6477 mSDsluCounter, 5767 mSDsCounter, 0 mSdLazyCounter, 150 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6477 SdHoareTripleChecker+Valid, 7296 SdHoareTripleChecker+Invalid, 176 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 150 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-10 12:10:01,499 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6477 Valid, 7296 Invalid, 176 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 150 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-10 12:10:01,503 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3496 states. [2022-01-10 12:10:01,675 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3496 to 987. [2022-01-10 12:10:01,678 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 987 states, 985 states have (on average 1.6781725888324872) internal successors, (1653), 986 states have internal predecessors, (1653), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:10:01,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 987 states to 987 states and 1653 transitions. [2022-01-10 12:10:01,682 INFO L78 Accepts]: Start accepts. Automaton has 987 states and 1653 transitions. Word has length 79 [2022-01-10 12:10:01,684 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:10:01,684 INFO L470 AbstractCegarLoop]: Abstraction has 987 states and 1653 transitions. [2022-01-10 12:10:01,684 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.166666666666666) internal successors, (79), 6 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:10:01,684 INFO L276 IsEmpty]: Start isEmpty. Operand 987 states and 1653 transitions. [2022-01-10 12:10:01,686 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2022-01-10 12:10:01,686 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:10:01,686 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 12:10:01,687 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-01-10 12:10:01,687 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 12:10:01,687 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:10:01,688 INFO L85 PathProgramCache]: Analyzing trace with hash -1893328653, now seen corresponding path program 1 times [2022-01-10 12:10:01,688 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:10:01,688 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1503705624] [2022-01-10 12:10:01,688 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:10:01,688 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:10:01,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:10:01,866 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 12:10:01,866 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:10:01,866 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1503705624] [2022-01-10 12:10:01,866 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1503705624] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:10:01,867 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:10:01,867 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-10 12:10:01,867 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1118144414] [2022-01-10 12:10:01,868 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:10:01,868 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-10 12:10:01,868 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:10:01,869 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-10 12:10:01,869 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-01-10 12:10:01,869 INFO L87 Difference]: Start difference. First operand 987 states and 1653 transitions. Second operand has 6 states, 6 states have (on average 13.333333333333334) internal successors, (80), 6 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:10:02,650 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:10:02,651 INFO L93 Difference]: Finished difference Result 6371 states and 10489 transitions. [2022-01-10 12:10:02,651 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-01-10 12:10:02,652 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 13.333333333333334) internal successors, (80), 6 states have internal predecessors, (80), 0 states have call successors, (0), 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 80 [2022-01-10 12:10:02,652 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:10:02,677 INFO L225 Difference]: With dead ends: 6371 [2022-01-10 12:10:02,678 INFO L226 Difference]: Without dead ends: 5928 [2022-01-10 12:10:02,682 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2022-01-10 12:10:02,682 INFO L933 BasicCegarLoop]: 1998 mSDtfsCounter, 5311 mSDsluCounter, 5317 mSDsCounter, 0 mSdLazyCounter, 136 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5311 SdHoareTripleChecker+Valid, 7315 SdHoareTripleChecker+Invalid, 162 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 136 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-10 12:10:02,683 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5311 Valid, 7315 Invalid, 162 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 136 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-10 12:10:02,689 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5928 states. [2022-01-10 12:10:02,876 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5928 to 1818. [2022-01-10 12:10:02,881 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1818 states, 1816 states have (on average 1.6844713656387664) internal successors, (3059), 1817 states have internal predecessors, (3059), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:10:02,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1818 states to 1818 states and 3059 transitions. [2022-01-10 12:10:02,888 INFO L78 Accepts]: Start accepts. Automaton has 1818 states and 3059 transitions. Word has length 80 [2022-01-10 12:10:02,889 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:10:02,889 INFO L470 AbstractCegarLoop]: Abstraction has 1818 states and 3059 transitions. [2022-01-10 12:10:02,889 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.333333333333334) internal successors, (80), 6 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:10:02,889 INFO L276 IsEmpty]: Start isEmpty. Operand 1818 states and 3059 transitions. [2022-01-10 12:10:02,893 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2022-01-10 12:10:02,893 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:10:02,893 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 12:10:02,893 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-01-10 12:10:02,894 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 12:10:02,894 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:10:02,894 INFO L85 PathProgramCache]: Analyzing trace with hash 1598940061, now seen corresponding path program 1 times [2022-01-10 12:10:02,894 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:10:02,894 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1206978936] [2022-01-10 12:10:02,894 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:10:02,895 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:10:02,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:10:02,991 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 12:10:02,991 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:10:02,991 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1206978936] [2022-01-10 12:10:02,992 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1206978936] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:10:02,992 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:10:02,992 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 12:10:02,992 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [7958974] [2022-01-10 12:10:02,992 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:10:02,992 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 12:10:02,993 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:10:02,993 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 12:10:02,993 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 12:10:02,993 INFO L87 Difference]: Start difference. First operand 1818 states and 3059 transitions. Second operand has 5 states, 5 states have (on average 16.0) internal successors, (80), 5 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:10:03,424 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:10:03,424 INFO L93 Difference]: Finished difference Result 5266 states and 8917 transitions. [2022-01-10 12:10:03,425 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 12:10:03,425 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.0) internal successors, (80), 5 states have internal predecessors, (80), 0 states have call successors, (0), 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 80 [2022-01-10 12:10:03,425 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:10:03,439 INFO L225 Difference]: With dead ends: 5266 [2022-01-10 12:10:03,440 INFO L226 Difference]: Without dead ends: 3498 [2022-01-10 12:10:03,443 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-01-10 12:10:03,444 INFO L933 BasicCegarLoop]: 1773 mSDtfsCounter, 2742 mSDsluCounter, 888 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2742 SdHoareTripleChecker+Valid, 2661 SdHoareTripleChecker+Invalid, 69 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 62 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 12:10:03,445 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2742 Valid, 2661 Invalid, 69 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 62 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 12:10:03,449 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3498 states. [2022-01-10 12:10:03,626 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3498 to 1818. [2022-01-10 12:10:03,630 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1818 states, 1816 states have (on average 1.6833700440528634) internal successors, (3057), 1817 states have internal predecessors, (3057), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:10:03,637 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1818 states to 1818 states and 3057 transitions. [2022-01-10 12:10:03,638 INFO L78 Accepts]: Start accepts. Automaton has 1818 states and 3057 transitions. Word has length 80 [2022-01-10 12:10:03,638 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:10:03,638 INFO L470 AbstractCegarLoop]: Abstraction has 1818 states and 3057 transitions. [2022-01-10 12:10:03,638 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.0) internal successors, (80), 5 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:10:03,638 INFO L276 IsEmpty]: Start isEmpty. Operand 1818 states and 3057 transitions. [2022-01-10 12:10:03,642 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2022-01-10 12:10:03,642 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:10:03,642 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 12:10:03,642 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-01-10 12:10:03,643 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 12:10:03,643 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:10:03,643 INFO L85 PathProgramCache]: Analyzing trace with hash 1605358345, now seen corresponding path program 1 times [2022-01-10 12:10:03,643 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:10:03,643 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2087749387] [2022-01-10 12:10:03,643 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:10:03,644 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:10:03,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:10:03,782 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 12:10:03,782 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:10:03,782 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2087749387] [2022-01-10 12:10:03,782 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2087749387] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:10:03,782 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:10:03,782 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-10 12:10:03,783 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1238495001] [2022-01-10 12:10:03,783 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:10:03,783 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-10 12:10:03,783 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:10:03,787 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-10 12:10:03,787 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-01-10 12:10:03,787 INFO L87 Difference]: Start difference. First operand 1818 states and 3057 transitions. Second operand has 6 states, 6 states have (on average 13.5) internal successors, (81), 6 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:10:05,112 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:10:05,112 INFO L93 Difference]: Finished difference Result 11502 states and 18997 transitions. [2022-01-10 12:10:05,113 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-01-10 12:10:05,113 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 13.5) internal successors, (81), 6 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 81 [2022-01-10 12:10:05,114 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:10:05,159 INFO L225 Difference]: With dead ends: 11502 [2022-01-10 12:10:05,159 INFO L226 Difference]: Without dead ends: 10740 [2022-01-10 12:10:05,166 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2022-01-10 12:10:05,167 INFO L933 BasicCegarLoop]: 2004 mSDtfsCounter, 5249 mSDsluCounter, 5355 mSDsCounter, 0 mSdLazyCounter, 117 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5249 SdHoareTripleChecker+Valid, 7359 SdHoareTripleChecker+Invalid, 127 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 117 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 12:10:05,167 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5249 Valid, 7359 Invalid, 127 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 117 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 12:10:05,178 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10740 states. [2022-01-10 12:10:05,566 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10740 to 3441. [2022-01-10 12:10:05,573 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3441 states, 3439 states have (on average 1.6932247746437918) internal successors, (5823), 3440 states have internal predecessors, (5823), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:10:05,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3441 states to 3441 states and 5823 transitions. [2022-01-10 12:10:05,587 INFO L78 Accepts]: Start accepts. Automaton has 3441 states and 5823 transitions. Word has length 81 [2022-01-10 12:10:05,588 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:10:05,588 INFO L470 AbstractCegarLoop]: Abstraction has 3441 states and 5823 transitions. [2022-01-10 12:10:05,588 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.5) internal successors, (81), 6 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:10:05,588 INFO L276 IsEmpty]: Start isEmpty. Operand 3441 states and 5823 transitions. [2022-01-10 12:10:05,594 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2022-01-10 12:10:05,595 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:10:05,595 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 12:10:05,595 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-01-10 12:10:05,595 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 12:10:05,596 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:10:05,596 INFO L85 PathProgramCache]: Analyzing trace with hash -1228028952, now seen corresponding path program 1 times [2022-01-10 12:10:05,596 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:10:05,596 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [528235958] [2022-01-10 12:10:05,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:10:05,596 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:10:05,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:10:05,787 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 12:10:05,787 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:10:05,788 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [528235958] [2022-01-10 12:10:05,788 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [528235958] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:10:05,788 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:10:05,788 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-10 12:10:05,788 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [595895551] [2022-01-10 12:10:05,788 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:10:05,789 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-01-10 12:10:05,789 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:10:05,789 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-01-10 12:10:05,790 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2022-01-10 12:10:05,790 INFO L87 Difference]: Start difference. First operand 3441 states and 5823 transitions. Second operand has 9 states, 9 states have (on average 9.0) internal successors, (81), 8 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:10:07,762 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:10:07,763 INFO L93 Difference]: Finished difference Result 14570 states and 23423 transitions. [2022-01-10 12:10:07,763 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-01-10 12:10:07,763 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 9.0) internal successors, (81), 8 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 81 [2022-01-10 12:10:07,765 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:10:07,815 INFO L225 Difference]: With dead ends: 14570 [2022-01-10 12:10:07,816 INFO L226 Difference]: Without dead ends: 13273 [2022-01-10 12:10:07,824 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 68 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=153, Invalid=309, Unknown=0, NotChecked=0, Total=462 [2022-01-10 12:10:07,824 INFO L933 BasicCegarLoop]: 1265 mSDtfsCounter, 9160 mSDsluCounter, 7211 mSDsCounter, 0 mSdLazyCounter, 357 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9160 SdHoareTripleChecker+Valid, 8476 SdHoareTripleChecker+Invalid, 383 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 357 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-10 12:10:07,826 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [9160 Valid, 8476 Invalid, 383 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 357 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-10 12:10:07,840 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13273 states. [2022-01-10 12:10:08,646 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13273 to 6692. [2022-01-10 12:10:08,659 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6692 states, 6690 states have (on average 1.699103139013453) internal successors, (11367), 6691 states have internal predecessors, (11367), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:10:08,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6692 states to 6692 states and 11367 transitions. [2022-01-10 12:10:08,685 INFO L78 Accepts]: Start accepts. Automaton has 6692 states and 11367 transitions. Word has length 81 [2022-01-10 12:10:08,685 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:10:08,685 INFO L470 AbstractCegarLoop]: Abstraction has 6692 states and 11367 transitions. [2022-01-10 12:10:08,686 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.0) internal successors, (81), 8 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:10:08,686 INFO L276 IsEmpty]: Start isEmpty. Operand 6692 states and 11367 transitions. [2022-01-10 12:10:08,701 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2022-01-10 12:10:08,701 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:10:08,702 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 12:10:08,702 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-01-10 12:10:08,702 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 12:10:08,703 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:10:08,703 INFO L85 PathProgramCache]: Analyzing trace with hash -2065595626, now seen corresponding path program 1 times [2022-01-10 12:10:08,703 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:10:08,703 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [600613503] [2022-01-10 12:10:08,703 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:10:08,703 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:10:08,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:10:08,874 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 12:10:08,875 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:10:08,875 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [600613503] [2022-01-10 12:10:08,875 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [600613503] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:10:08,875 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:10:08,875 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-10 12:10:08,875 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [732622983] [2022-01-10 12:10:08,876 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:10:08,876 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-01-10 12:10:08,876 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:10:08,876 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-01-10 12:10:08,876 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2022-01-10 12:10:08,877 INFO L87 Difference]: Start difference. First operand 6692 states and 11367 transitions. Second operand has 9 states, 9 states have (on average 9.11111111111111) internal successors, (82), 8 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:10:12,233 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:10:12,233 INFO L93 Difference]: Finished difference Result 25708 states and 41521 transitions. [2022-01-10 12:10:12,234 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-01-10 12:10:12,234 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 9.11111111111111) internal successors, (82), 8 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 82 [2022-01-10 12:10:12,234 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:10:12,295 INFO L225 Difference]: With dead ends: 25708 [2022-01-10 12:10:12,295 INFO L226 Difference]: Without dead ends: 23222 [2022-01-10 12:10:12,310 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 68 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=153, Invalid=309, Unknown=0, NotChecked=0, Total=462 [2022-01-10 12:10:12,311 INFO L933 BasicCegarLoop]: 1125 mSDtfsCounter, 9148 mSDsluCounter, 6502 mSDsCounter, 0 mSdLazyCounter, 352 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9148 SdHoareTripleChecker+Valid, 7627 SdHoareTripleChecker+Invalid, 378 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 352 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-10 12:10:12,311 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [9148 Valid, 7627 Invalid, 378 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 352 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-10 12:10:12,336 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23222 states. [2022-01-10 12:10:13,674 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23222 to 13211. [2022-01-10 12:10:13,700 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13211 states, 13209 states have (on average 1.7019456431221136) internal successors, (22481), 13210 states have internal predecessors, (22481), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:10:13,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13211 states to 13211 states and 22481 transitions. [2022-01-10 12:10:13,739 INFO L78 Accepts]: Start accepts. Automaton has 13211 states and 22481 transitions. Word has length 82 [2022-01-10 12:10:13,740 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:10:13,740 INFO L470 AbstractCegarLoop]: Abstraction has 13211 states and 22481 transitions. [2022-01-10 12:10:13,740 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.11111111111111) internal successors, (82), 8 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:10:13,740 INFO L276 IsEmpty]: Start isEmpty. Operand 13211 states and 22481 transitions. [2022-01-10 12:10:13,766 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2022-01-10 12:10:13,766 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:10:13,766 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 12:10:13,767 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-01-10 12:10:13,767 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 12:10:13,767 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:10:13,767 INFO L85 PathProgramCache]: Analyzing trace with hash 45694743, now seen corresponding path program 1 times [2022-01-10 12:10:13,768 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:10:13,768 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1797119308] [2022-01-10 12:10:13,769 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:10:13,769 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:10:13,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:10:13,950 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 12:10:13,951 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:10:13,951 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1797119308] [2022-01-10 12:10:13,951 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1797119308] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:10:13,951 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:10:13,951 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-10 12:10:13,951 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1166418371] [2022-01-10 12:10:13,952 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:10:13,952 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-10 12:10:13,952 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:10:13,952 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-10 12:10:13,952 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-01-10 12:10:13,953 INFO L87 Difference]: Start difference. First operand 13211 states and 22481 transitions. Second operand has 6 states, 6 states have (on average 13.666666666666666) internal successors, (82), 6 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:10:17,093 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:10:17,093 INFO L93 Difference]: Finished difference Result 34059 states and 57079 transitions. [2022-01-10 12:10:17,093 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-01-10 12:10:17,094 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 13.666666666666666) internal successors, (82), 6 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 82 [2022-01-10 12:10:17,094 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:10:17,176 INFO L225 Difference]: With dead ends: 34059 [2022-01-10 12:10:17,176 INFO L226 Difference]: Without dead ends: 32186 [2022-01-10 12:10:17,193 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2022-01-10 12:10:17,194 INFO L933 BasicCegarLoop]: 1763 mSDtfsCounter, 4996 mSDsluCounter, 5878 mSDsCounter, 0 mSdLazyCounter, 148 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4996 SdHoareTripleChecker+Valid, 7641 SdHoareTripleChecker+Invalid, 174 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 148 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-10 12:10:17,194 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4996 Valid, 7641 Invalid, 174 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 148 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-10 12:10:17,225 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32186 states. [2022-01-10 12:10:18,460 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32186 to 13358. [2022-01-10 12:10:18,482 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13358 states, 13356 states have (on average 1.6998352800239593) internal successors, (22703), 13357 states have internal predecessors, (22703), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:10:18,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13358 states to 13358 states and 22703 transitions. [2022-01-10 12:10:18,514 INFO L78 Accepts]: Start accepts. Automaton has 13358 states and 22703 transitions. Word has length 82 [2022-01-10 12:10:18,514 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:10:18,514 INFO L470 AbstractCegarLoop]: Abstraction has 13358 states and 22703 transitions. [2022-01-10 12:10:18,515 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.666666666666666) internal successors, (82), 6 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:10:18,515 INFO L276 IsEmpty]: Start isEmpty. Operand 13358 states and 22703 transitions. [2022-01-10 12:10:18,537 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2022-01-10 12:10:18,537 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:10:18,538 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 12:10:18,538 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-01-10 12:10:18,538 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 12:10:18,539 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:10:18,539 INFO L85 PathProgramCache]: Analyzing trace with hash -755596342, now seen corresponding path program 1 times [2022-01-10 12:10:18,539 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:10:18,539 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1294325528] [2022-01-10 12:10:18,539 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:10:18,539 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:10:18,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:10:18,691 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 12:10:18,691 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:10:18,692 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1294325528] [2022-01-10 12:10:18,692 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1294325528] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:10:18,692 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:10:18,692 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 12:10:18,692 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [523537852] [2022-01-10 12:10:18,692 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:10:18,693 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 12:10:18,693 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:10:18,693 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 12:10:18,694 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 12:10:18,694 INFO L87 Difference]: Start difference. First operand 13358 states and 22703 transitions. Second operand has 5 states, 5 states have (on average 16.4) internal successors, (82), 4 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:10:23,398 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:10:23,399 INFO L93 Difference]: Finished difference Result 38166 states and 60515 transitions. [2022-01-10 12:10:23,399 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-01-10 12:10:23,400 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.4) internal successors, (82), 4 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 82 [2022-01-10 12:10:23,400 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:10:23,484 INFO L225 Difference]: With dead ends: 38166 [2022-01-10 12:10:23,484 INFO L226 Difference]: Without dead ends: 34690 [2022-01-10 12:10:23,505 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2022-01-10 12:10:23,506 INFO L933 BasicCegarLoop]: 927 mSDtfsCounter, 3226 mSDsluCounter, 3228 mSDsCounter, 0 mSdLazyCounter, 112 mSolverCounterSat, 53 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3226 SdHoareTripleChecker+Valid, 4155 SdHoareTripleChecker+Invalid, 165 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 53 IncrementalHoareTripleChecker+Valid, 112 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 12:10:23,507 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3226 Valid, 4155 Invalid, 165 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [53 Valid, 112 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 12:10:23,545 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34690 states. [2022-01-10 12:10:25,689 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34690 to 18526. [2022-01-10 12:10:25,716 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18526 states, 18524 states have (on average 1.6516950982509178) internal successors, (30596), 18525 states have internal predecessors, (30596), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:10:25,761 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18526 states to 18526 states and 30596 transitions. [2022-01-10 12:10:25,762 INFO L78 Accepts]: Start accepts. Automaton has 18526 states and 30596 transitions. Word has length 82 [2022-01-10 12:10:25,762 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:10:25,762 INFO L470 AbstractCegarLoop]: Abstraction has 18526 states and 30596 transitions. [2022-01-10 12:10:25,762 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.4) internal successors, (82), 4 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:10:25,762 INFO L276 IsEmpty]: Start isEmpty. Operand 18526 states and 30596 transitions. [2022-01-10 12:10:25,787 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2022-01-10 12:10:25,788 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:10:25,788 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 12:10:25,788 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-01-10 12:10:25,788 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 12:10:25,789 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:10:25,789 INFO L85 PathProgramCache]: Analyzing trace with hash -446893979, now seen corresponding path program 1 times [2022-01-10 12:10:25,789 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:10:25,789 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [627715237] [2022-01-10 12:10:25,789 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:10:25,789 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:10:25,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:10:25,917 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 12:10:25,917 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:10:25,918 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [627715237] [2022-01-10 12:10:25,918 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [627715237] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:10:25,918 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:10:25,918 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 12:10:25,918 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1398983821] [2022-01-10 12:10:25,918 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:10:25,919 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 12:10:25,919 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:10:25,919 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 12:10:25,919 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 12:10:25,920 INFO L87 Difference]: Start difference. First operand 18526 states and 30596 transitions. Second operand has 5 states, 5 states have (on average 16.8) internal successors, (84), 5 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:10:32,053 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:10:32,053 INFO L93 Difference]: Finished difference Result 46232 states and 70919 transitions. [2022-01-10 12:10:32,054 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-10 12:10:32,054 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.8) internal successors, (84), 5 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 84 [2022-01-10 12:10:32,054 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:10:32,116 INFO L225 Difference]: With dead ends: 46232 [2022-01-10 12:10:32,116 INFO L226 Difference]: Without dead ends: 41012 [2022-01-10 12:10:32,134 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-01-10 12:10:32,135 INFO L933 BasicCegarLoop]: 1183 mSDtfsCounter, 1876 mSDsluCounter, 3605 mSDsCounter, 0 mSdLazyCounter, 65 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1876 SdHoareTripleChecker+Valid, 4788 SdHoareTripleChecker+Invalid, 78 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 65 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 12:10:32,135 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1876 Valid, 4788 Invalid, 78 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 65 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 12:10:32,174 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41012 states. [2022-01-10 12:10:34,276 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41012 to 18658. [2022-01-10 12:10:34,300 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18658 states, 18656 states have (on average 1.6470840480274442) internal successors, (30728), 18657 states have internal predecessors, (30728), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:10:34,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18658 states to 18658 states and 30728 transitions. [2022-01-10 12:10:34,342 INFO L78 Accepts]: Start accepts. Automaton has 18658 states and 30728 transitions. Word has length 84 [2022-01-10 12:10:34,343 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:10:34,343 INFO L470 AbstractCegarLoop]: Abstraction has 18658 states and 30728 transitions. [2022-01-10 12:10:34,343 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.8) internal successors, (84), 5 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:10:34,343 INFO L276 IsEmpty]: Start isEmpty. Operand 18658 states and 30728 transitions. [2022-01-10 12:10:34,367 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2022-01-10 12:10:34,367 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:10:34,367 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 12:10:34,367 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-01-10 12:10:34,367 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 12:10:34,368 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:10:34,368 INFO L85 PathProgramCache]: Analyzing trace with hash 1814963461, now seen corresponding path program 1 times [2022-01-10 12:10:34,368 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:10:34,368 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1593477656] [2022-01-10 12:10:34,368 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:10:34,368 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:10:34,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:10:34,518 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 12:10:34,518 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:10:34,518 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1593477656] [2022-01-10 12:10:34,518 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1593477656] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:10:34,518 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:10:34,518 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-01-10 12:10:34,518 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [57295504] [2022-01-10 12:10:34,519 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:10:34,519 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-01-10 12:10:34,519 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:10:34,520 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-01-10 12:10:34,520 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2022-01-10 12:10:34,520 INFO L87 Difference]: Start difference. First operand 18658 states and 30728 transitions. Second operand has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:10:37,886 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:10:37,887 INFO L93 Difference]: Finished difference Result 31265 states and 49358 transitions. [2022-01-10 12:10:37,887 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-01-10 12:10:37,887 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 84 [2022-01-10 12:10:37,887 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:10:37,919 INFO L225 Difference]: With dead ends: 31265 [2022-01-10 12:10:37,920 INFO L226 Difference]: Without dead ends: 22457 [2022-01-10 12:10:37,933 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 94 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=196, Invalid=454, Unknown=0, NotChecked=0, Total=650 [2022-01-10 12:10:37,934 INFO L933 BasicCegarLoop]: 910 mSDtfsCounter, 3709 mSDsluCounter, 4946 mSDsCounter, 0 mSdLazyCounter, 103 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3709 SdHoareTripleChecker+Valid, 5856 SdHoareTripleChecker+Invalid, 111 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 103 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 12:10:37,934 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3709 Valid, 5856 Invalid, 111 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 103 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 12:10:37,957 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22457 states. [2022-01-10 12:10:40,073 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22457 to 18530. [2022-01-10 12:10:40,095 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18530 states, 18528 states have (on average 1.6411917098445596) internal successors, (30408), 18529 states have internal predecessors, (30408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:10:40,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18530 states to 18530 states and 30408 transitions. [2022-01-10 12:10:40,137 INFO L78 Accepts]: Start accepts. Automaton has 18530 states and 30408 transitions. Word has length 84 [2022-01-10 12:10:40,137 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:10:40,137 INFO L470 AbstractCegarLoop]: Abstraction has 18530 states and 30408 transitions. [2022-01-10 12:10:40,137 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:10:40,137 INFO L276 IsEmpty]: Start isEmpty. Operand 18530 states and 30408 transitions. [2022-01-10 12:10:40,161 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2022-01-10 12:10:40,161 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:10:40,161 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 12:10:40,161 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-01-10 12:10:40,162 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 12:10:40,162 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:10:40,162 INFO L85 PathProgramCache]: Analyzing trace with hash 1546363306, now seen corresponding path program 1 times [2022-01-10 12:10:40,162 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:10:40,162 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1031887956] [2022-01-10 12:10:40,162 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:10:40,162 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:10:40,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:10:40,263 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 12:10:40,263 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:10:40,263 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1031887956] [2022-01-10 12:10:40,264 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1031887956] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:10:40,265 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:10:40,265 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 12:10:40,265 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1962467456] [2022-01-10 12:10:40,265 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:10:40,265 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 12:10:40,265 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:10:40,266 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 12:10:40,266 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 12:10:40,266 INFO L87 Difference]: Start difference. First operand 18530 states and 30408 transitions. Second operand has 4 states, 4 states have (on average 21.5) internal successors, (86), 4 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:10:47,179 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:10:47,179 INFO L93 Difference]: Finished difference Result 51480 states and 79894 transitions. [2022-01-10 12:10:47,180 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 12:10:47,180 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 21.5) internal successors, (86), 4 states have internal predecessors, (86), 0 states have call successors, (0), 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 86 [2022-01-10 12:10:47,180 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:10:47,273 INFO L225 Difference]: With dead ends: 51480 [2022-01-10 12:10:47,273 INFO L226 Difference]: Without dead ends: 41360 [2022-01-10 12:10:47,291 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-10 12:10:47,292 INFO L933 BasicCegarLoop]: 1138 mSDtfsCounter, 1109 mSDsluCounter, 2050 mSDsCounter, 0 mSdLazyCounter, 47 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1109 SdHoareTripleChecker+Valid, 3188 SdHoareTripleChecker+Invalid, 74 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 47 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 12:10:47,292 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1109 Valid, 3188 Invalid, 74 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 47 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 12:10:47,330 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41360 states. [2022-01-10 12:10:49,811 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41360 to 18602. [2022-01-10 12:10:49,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18602 states, 18600 states have (on average 1.6387096774193548) internal successors, (30480), 18601 states have internal predecessors, (30480), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:10:49,855 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18602 states to 18602 states and 30480 transitions. [2022-01-10 12:10:49,855 INFO L78 Accepts]: Start accepts. Automaton has 18602 states and 30480 transitions. Word has length 86 [2022-01-10 12:10:49,856 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:10:49,856 INFO L470 AbstractCegarLoop]: Abstraction has 18602 states and 30480 transitions. [2022-01-10 12:10:49,856 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 21.5) internal successors, (86), 4 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:10:49,856 INFO L276 IsEmpty]: Start isEmpty. Operand 18602 states and 30480 transitions. [2022-01-10 12:10:49,874 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2022-01-10 12:10:49,874 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:10:49,875 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 12:10:49,875 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-01-10 12:10:49,875 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 12:10:49,875 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:10:49,875 INFO L85 PathProgramCache]: Analyzing trace with hash -1708717813, now seen corresponding path program 1 times [2022-01-10 12:10:49,876 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:10:49,876 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1313421885] [2022-01-10 12:10:49,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:10:49,876 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:10:49,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:10:49,970 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 12:10:49,970 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:10:49,970 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1313421885] [2022-01-10 12:10:49,970 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1313421885] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:10:49,970 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:10:49,971 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-10 12:10:49,971 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [406483739] [2022-01-10 12:10:49,971 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:10:49,971 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-10 12:10:49,971 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:10:49,972 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-10 12:10:49,972 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-01-10 12:10:49,972 INFO L87 Difference]: Start difference. First operand 18602 states and 30480 transitions. Second operand has 6 states, 6 states have (on average 14.333333333333334) internal successors, (86), 6 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)