/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_spec9_product31.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-a10ec3b [2022-01-10 12:22:11,499 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-10 12:22:11,501 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-10 12:22:11,560 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-01-10 12:22:11,560 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-01-10 12:22:11,562 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-01-10 12:22:11,564 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-01-10 12:22:11,566 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-01-10 12:22:11,568 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-01-10 12:22:11,572 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-01-10 12:22:11,573 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-01-10 12:22:11,574 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-01-10 12:22:11,574 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-10 12:22:11,576 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-10 12:22:11,577 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-10 12:22:11,579 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-10 12:22:11,580 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-10 12:22:11,580 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-10 12:22:11,582 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-10 12:22:11,587 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-10 12:22:11,588 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-10 12:22:11,588 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-10 12:22:11,590 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-10 12:22:11,590 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-10 12:22:11,595 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-01-10 12:22:11,595 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-01-10 12:22:11,595 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-01-10 12:22:11,596 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-01-10 12:22:11,596 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-01-10 12:22:11,597 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-01-10 12:22:11,597 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-01-10 12:22:11,597 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-01-10 12:22:11,599 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-01-10 12:22:11,599 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-01-10 12:22:11,600 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-01-10 12:22:11,600 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-01-10 12:22:11,601 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-01-10 12:22:11,601 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-01-10 12:22:11,601 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-10 12:22:11,601 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-10 12:22:11,602 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-10 12:22:11,603 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 12:22:11,623 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-10 12:22:11,623 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-10 12:22:11,623 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-10 12:22:11,623 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-10 12:22:11,624 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-10 12:22:11,624 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-10 12:22:11,624 INFO L138 SettingsManager]: * Use SBE=true [2022-01-10 12:22:11,625 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-10 12:22:11,625 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-10 12:22:11,625 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-10 12:22:11,625 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-10 12:22:11,625 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-10 12:22:11,626 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-10 12:22:11,626 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-01-10 12:22:11,626 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-01-10 12:22:11,626 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-01-10 12:22:11,626 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-10 12:22:11,626 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-10 12:22:11,626 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-10 12:22:11,626 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-10 12:22:11,626 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-10 12:22:11,627 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 12:22:11,627 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-10 12:22:11,627 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-10 12:22:11,627 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-10 12:22:11,627 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-10 12:22:11,628 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-01-10 12:22:11,628 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-10 12:22:11,628 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-10 12:22:11,628 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-10 12:22:11,628 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-01-10 12:22:11,628 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-01-10 12:22:11,629 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-01-10 12:22:11,629 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-10 12:22:11,831 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-10 12:22:11,861 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-10 12:22:11,863 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-10 12:22:11,864 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-10 12:22:11,864 INFO L275 PluginConnector]: CDTParser initialized [2022-01-10 12:22:11,865 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/email_spec9_product31.cil.c [2022-01-10 12:22:11,917 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1695339f9/d9f647a69b0f46d496dd53c02a2e3137/FLAG90ebd1cbe [2022-01-10 12:22:12,342 INFO L306 CDTParser]: Found 1 translation units. [2022-01-10 12:22:12,343 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/email_spec9_product31.cil.c [2022-01-10 12:22:12,360 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1695339f9/d9f647a69b0f46d496dd53c02a2e3137/FLAG90ebd1cbe [2022-01-10 12:22:12,661 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1695339f9/d9f647a69b0f46d496dd53c02a2e3137 [2022-01-10 12:22:12,663 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-10 12:22:12,664 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-01-10 12:22:12,665 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-10 12:22:12,665 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-10 12:22:12,668 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-10 12:22:12,668 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 12:22:12" (1/1) ... [2022-01-10 12:22:12,669 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@20a7a1fc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:22:12, skipping insertion in model container [2022-01-10 12:22:12,669 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 12:22:12" (1/1) ... [2022-01-10 12:22:12,674 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-10 12:22:12,726 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-10 12:22:13,152 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_spec9_product31.cil.c[56976,56989] [2022-01-10 12:22:13,189 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 12:22:13,202 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2022-01-10 12:22:13,214 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-10 12:22:13,283 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_spec9_product31.cil.c[56976,56989] [2022-01-10 12:22:13,290 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 12:22:13,297 INFO L203 MainTranslator]: Completed pre-run [2022-01-10 12:22:13,357 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_spec9_product31.cil.c[56976,56989] [2022-01-10 12:22:13,373 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 12:22:13,403 INFO L208 MainTranslator]: Completed translation [2022-01-10 12:22:13,403 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:22:13 WrapperNode [2022-01-10 12:22:13,404 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-10 12:22:13,404 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-10 12:22:13,404 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-10 12:22:13,405 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-10 12:22:13,409 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:22:13" (1/1) ... [2022-01-10 12:22:13,432 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:22:13" (1/1) ... [2022-01-10 12:22:13,515 INFO L137 Inliner]: procedures = 134, calls = 223, calls flagged for inlining = 130, calls inlined = 189, statements flattened = 2819 [2022-01-10 12:22:13,515 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-10 12:22:13,516 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-10 12:22:13,516 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-10 12:22:13,516 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-10 12:22:13,522 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:22:13" (1/1) ... [2022-01-10 12:22:13,522 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:22:13" (1/1) ... [2022-01-10 12:22:13,537 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:22:13" (1/1) ... [2022-01-10 12:22:13,538 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:22:13" (1/1) ... [2022-01-10 12:22:13,560 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:22:13" (1/1) ... [2022-01-10 12:22:13,573 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:22:13" (1/1) ... [2022-01-10 12:22:13,577 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:22:13" (1/1) ... [2022-01-10 12:22:13,586 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-10 12:22:13,587 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-10 12:22:13,587 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-10 12:22:13,587 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-10 12:22:13,588 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:22:13" (1/1) ... [2022-01-10 12:22:13,598 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 12:22:13,617 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 12:22:13,627 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 12:22:13,643 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 12:22:13,660 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2022-01-10 12:22:13,661 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-10 12:22:13,661 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-01-10 12:22:13,661 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-10 12:22:13,661 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-10 12:22:13,836 INFO L234 CfgBuilder]: Building ICFG [2022-01-10 12:22:13,837 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-10 12:22:15,037 INFO L275 CfgBuilder]: Performing block encoding [2022-01-10 12:22:15,046 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-10 12:22:15,046 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-01-10 12:22:15,047 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 12:22:15 BoogieIcfgContainer [2022-01-10 12:22:15,047 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-10 12:22:15,048 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2022-01-10 12:22:15,048 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2022-01-10 12:22:15,049 INFO L275 PluginConnector]: IcfgTransformer initialized [2022-01-10 12:22:15,051 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 12:22:15" (1/1) ... [2022-01-10 12:22:15,344 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 10.01 12:22:15 BasicIcfg [2022-01-10 12:22:15,345 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2022-01-10 12:22:15,347 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-10 12:22:15,347 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-10 12:22:15,349 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-10 12:22:15,349 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.01 12:22:12" (1/4) ... [2022-01-10 12:22:15,350 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@64805f23 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 12:22:15, skipping insertion in model container [2022-01-10 12:22:15,350 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:22:13" (2/4) ... [2022-01-10 12:22:15,350 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@64805f23 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 12:22:15, skipping insertion in model container [2022-01-10 12:22:15,350 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 12:22:15" (3/4) ... [2022-01-10 12:22:15,351 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@64805f23 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.01 12:22:15, skipping insertion in model container [2022-01-10 12:22:15,351 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 10.01 12:22:15" (4/4) ... [2022-01-10 12:22:15,351 INFO L111 eAbstractionObserver]: Analyzing ICFG email_spec9_product31.cil.cTransformedIcfg [2022-01-10 12:22:15,357 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-10 12:22:15,357 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-01-10 12:22:15,395 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-10 12:22:15,402 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 12:22:15,402 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-01-10 12:22:15,426 INFO L276 IsEmpty]: Start isEmpty. Operand has 616 states, 613 states have (on average 1.6753670473083198) internal successors, (1027), 615 states have internal predecessors, (1027), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:22:15,440 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2022-01-10 12:22:15,440 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:22:15,440 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] [2022-01-10 12:22:15,441 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 12:22:15,444 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:22:15,444 INFO L85 PathProgramCache]: Analyzing trace with hash -88030336, now seen corresponding path program 1 times [2022-01-10 12:22:15,450 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:22:15,450 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [980377491] [2022-01-10 12:22:15,450 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:22:15,451 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:22:15,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:22:15,806 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 12:22:15,806 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:22:15,806 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [980377491] [2022-01-10 12:22:15,807 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [980377491] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:22:15,807 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:22:15,807 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 12:22:15,808 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1487828595] [2022-01-10 12:22:15,808 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:22:15,811 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-01-10 12:22:15,811 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:22:15,841 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-01-10 12:22:15,841 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-01-10 12:22:15,843 INFO L87 Difference]: Start difference. First operand has 616 states, 613 states have (on average 1.6753670473083198) internal successors, (1027), 615 states have internal predecessors, (1027), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 26.0) internal successors, (52), 2 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:22:15,893 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:22:15,893 INFO L93 Difference]: Finished difference Result 971 states and 1594 transitions. [2022-01-10 12:22:15,894 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-01-10 12:22:15,895 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 26.0) internal successors, (52), 2 states have internal predecessors, (52), 0 states have call successors, (0), 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 52 [2022-01-10 12:22:15,895 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:22:15,904 INFO L225 Difference]: With dead ends: 971 [2022-01-10 12:22:15,904 INFO L226 Difference]: Without dead ends: 487 [2022-01-10 12:22:15,908 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 12:22:15,909 INFO L933 BasicCegarLoop]: 1021 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, 1021 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 12:22:15,910 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 1021 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 12:22:15,922 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 487 states. [2022-01-10 12:22:15,974 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 487 to 487. [2022-01-10 12:22:15,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 487 states, 485 states have (on average 1.690721649484536) internal successors, (820), 486 states have internal predecessors, (820), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:22:15,979 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 487 states to 487 states and 820 transitions. [2022-01-10 12:22:15,979 INFO L78 Accepts]: Start accepts. Automaton has 487 states and 820 transitions. Word has length 52 [2022-01-10 12:22:15,980 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:22:15,980 INFO L470 AbstractCegarLoop]: Abstraction has 487 states and 820 transitions. [2022-01-10 12:22:15,980 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 26.0) internal successors, (52), 2 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:22:15,980 INFO L276 IsEmpty]: Start isEmpty. Operand 487 states and 820 transitions. [2022-01-10 12:22:15,982 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2022-01-10 12:22:15,982 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:22:15,982 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 12:22:15,982 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-10 12:22:15,982 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 12:22:15,983 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:22:15,983 INFO L85 PathProgramCache]: Analyzing trace with hash 1565456435, now seen corresponding path program 1 times [2022-01-10 12:22:15,983 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:22:15,983 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2003113111] [2022-01-10 12:22:15,983 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:22:15,983 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:22:16,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:22:16,157 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 12:22:16,157 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:22:16,157 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2003113111] [2022-01-10 12:22:16,157 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2003113111] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:22:16,158 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:22:16,158 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 12:22:16,158 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1778574553] [2022-01-10 12:22:16,159 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:22:16,160 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 12:22:16,160 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:22:16,162 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 12:22:16,166 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 12:22:16,166 INFO L87 Difference]: Start difference. First operand 487 states and 820 transitions. Second operand has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 2 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:22:16,225 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:22:16,225 INFO L93 Difference]: Finished difference Result 660 states and 1094 transitions. [2022-01-10 12:22:16,226 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 12:22:16,226 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 2 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 53 [2022-01-10 12:22:16,226 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:22:16,229 INFO L225 Difference]: With dead ends: 660 [2022-01-10 12:22:16,229 INFO L226 Difference]: Without dead ends: 481 [2022-01-10 12:22:16,230 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 12:22:16,231 INFO L933 BasicCegarLoop]: 810 mSDtfsCounter, 499 mSDsluCounter, 262 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 499 SdHoareTripleChecker+Valid, 1072 SdHoareTripleChecker+Invalid, 3 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 12:22:16,231 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [499 Valid, 1072 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 12:22:16,232 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 481 states. [2022-01-10 12:22:16,259 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 481 to 481. [2022-01-10 12:22:16,260 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 481 states, 480 states have (on average 1.6895833333333334) internal successors, (811), 480 states have internal predecessors, (811), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:22:16,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 481 states to 481 states and 811 transitions. [2022-01-10 12:22:16,262 INFO L78 Accepts]: Start accepts. Automaton has 481 states and 811 transitions. Word has length 53 [2022-01-10 12:22:16,263 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:22:16,263 INFO L470 AbstractCegarLoop]: Abstraction has 481 states and 811 transitions. [2022-01-10 12:22:16,266 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 2 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:22:16,267 INFO L276 IsEmpty]: Start isEmpty. Operand 481 states and 811 transitions. [2022-01-10 12:22:16,272 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2022-01-10 12:22:16,272 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:22:16,272 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 12:22:16,272 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-01-10 12:22:16,272 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 12:22:16,273 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:22:16,273 INFO L85 PathProgramCache]: Analyzing trace with hash -193338176, now seen corresponding path program 1 times [2022-01-10 12:22:16,273 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:22:16,273 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1508266075] [2022-01-10 12:22:16,273 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:22:16,273 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:22:16,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:22:16,434 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 12:22:16,434 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:22:16,434 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1508266075] [2022-01-10 12:22:16,435 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1508266075] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:22:16,435 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:22:16,435 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 12:22:16,435 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1328635087] [2022-01-10 12:22:16,435 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:22:16,436 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 12:22:16,436 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:22:16,436 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 12:22:16,436 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 12:22:16,437 INFO L87 Difference]: Start difference. First operand 481 states and 811 transitions. Second operand has 3 states, 3 states have (on average 34.0) internal successors, (102), 3 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:22:16,529 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:22:16,529 INFO L93 Difference]: Finished difference Result 943 states and 1594 transitions. [2022-01-10 12:22:16,529 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 12:22:16,529 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 34.0) internal successors, (102), 3 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 102 [2022-01-10 12:22:16,530 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:22:16,531 INFO L225 Difference]: With dead ends: 943 [2022-01-10 12:22:16,531 INFO L226 Difference]: Without dead ends: 481 [2022-01-10 12:22:16,536 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 12:22:16,540 INFO L933 BasicCegarLoop]: 792 mSDtfsCounter, 786 mSDsluCounter, 13 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 786 SdHoareTripleChecker+Valid, 805 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 12:22:16,541 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [786 Valid, 805 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 12:22:16,543 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 481 states. [2022-01-10 12:22:16,561 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 481 to 481. [2022-01-10 12:22:16,562 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 481 states, 480 states have (on average 1.6854166666666666) internal successors, (809), 480 states have internal predecessors, (809), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:22:16,563 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 481 states to 481 states and 809 transitions. [2022-01-10 12:22:16,563 INFO L78 Accepts]: Start accepts. Automaton has 481 states and 809 transitions. Word has length 102 [2022-01-10 12:22:16,564 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:22:16,564 INFO L470 AbstractCegarLoop]: Abstraction has 481 states and 809 transitions. [2022-01-10 12:22:16,564 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 34.0) internal successors, (102), 3 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:22:16,565 INFO L276 IsEmpty]: Start isEmpty. Operand 481 states and 809 transitions. [2022-01-10 12:22:16,567 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2022-01-10 12:22:16,568 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:22:16,568 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 12:22:16,568 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-01-10 12:22:16,568 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 12:22:16,569 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:22:16,569 INFO L85 PathProgramCache]: Analyzing trace with hash -805485056, now seen corresponding path program 1 times [2022-01-10 12:22:16,569 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:22:16,569 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [356897320] [2022-01-10 12:22:16,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:22:16,569 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:22:16,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:22:16,704 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 12:22:16,705 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:22:16,705 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [356897320] [2022-01-10 12:22:16,705 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [356897320] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:22:16,705 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:22:16,705 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 12:22:16,705 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2075381823] [2022-01-10 12:22:16,705 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:22:16,706 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 12:22:16,706 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:22:16,706 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 12:22:16,706 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 12:22:16,707 INFO L87 Difference]: Start difference. First operand 481 states and 809 transitions. Second operand has 5 states, 5 states have (on average 20.8) internal successors, (104), 5 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:22:16,911 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:22:16,911 INFO L93 Difference]: Finished difference Result 2273 states and 3841 transitions. [2022-01-10 12:22:16,911 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-10 12:22:16,912 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 20.8) internal successors, (104), 5 states have internal predecessors, (104), 0 states have call successors, (0), 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 104 [2022-01-10 12:22:16,912 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:22:16,920 INFO L225 Difference]: With dead ends: 2273 [2022-01-10 12:22:16,920 INFO L226 Difference]: Without dead ends: 1816 [2022-01-10 12:22:16,921 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 12:22:16,926 INFO L933 BasicCegarLoop]: 1541 mSDtfsCounter, 3828 mSDsluCounter, 2299 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3828 SdHoareTripleChecker+Valid, 3840 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 12:22:16,926 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3828 Valid, 3840 Invalid, 82 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 62 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 12:22:16,928 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1816 states. [2022-01-10 12:22:16,973 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1816 to 481. [2022-01-10 12:22:16,974 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 481 states, 480 states have (on average 1.6833333333333333) internal successors, (808), 480 states have internal predecessors, (808), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:22:16,976 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 481 states to 481 states and 808 transitions. [2022-01-10 12:22:16,976 INFO L78 Accepts]: Start accepts. Automaton has 481 states and 808 transitions. Word has length 104 [2022-01-10 12:22:16,976 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:22:16,976 INFO L470 AbstractCegarLoop]: Abstraction has 481 states and 808 transitions. [2022-01-10 12:22:16,976 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 20.8) internal successors, (104), 5 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:22:16,976 INFO L276 IsEmpty]: Start isEmpty. Operand 481 states and 808 transitions. [2022-01-10 12:22:16,981 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2022-01-10 12:22:16,981 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:22:16,981 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 12:22:16,981 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-01-10 12:22:16,981 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 12:22:16,981 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:22:16,981 INFO L85 PathProgramCache]: Analyzing trace with hash -383545458, now seen corresponding path program 1 times [2022-01-10 12:22:16,982 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:22:16,982 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1652589322] [2022-01-10 12:22:16,982 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:22:16,982 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:22:17,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:22:17,115 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 12:22:17,115 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:22:17,115 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1652589322] [2022-01-10 12:22:17,115 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1652589322] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:22:17,115 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:22:17,115 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 12:22:17,116 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [454533374] [2022-01-10 12:22:17,116 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:22:17,116 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 12:22:17,116 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:22:17,117 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 12:22:17,117 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 12:22:17,117 INFO L87 Difference]: Start difference. First operand 481 states and 808 transitions. Second operand has 3 states, 3 states have (on average 35.0) internal successors, (105), 3 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:22:17,166 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:22:17,166 INFO L93 Difference]: Finished difference Result 947 states and 1594 transitions. [2022-01-10 12:22:17,166 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 12:22:17,167 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 35.0) internal successors, (105), 3 states have internal predecessors, (105), 0 states have call successors, (0), 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 105 [2022-01-10 12:22:17,167 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:22:17,169 INFO L225 Difference]: With dead ends: 947 [2022-01-10 12:22:17,169 INFO L226 Difference]: Without dead ends: 495 [2022-01-10 12:22:17,170 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 12:22:17,170 INFO L933 BasicCegarLoop]: 822 mSDtfsCounter, 787 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 787 SdHoareTripleChecker+Valid, 844 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 12:22:17,170 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [787 Valid, 844 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 12:22:17,171 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 495 states. [2022-01-10 12:22:17,196 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 495 to 481. [2022-01-10 12:22:17,199 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 481 states, 480 states have (on average 1.68125) internal successors, (807), 480 states have internal predecessors, (807), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:22:17,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 481 states to 481 states and 807 transitions. [2022-01-10 12:22:17,201 INFO L78 Accepts]: Start accepts. Automaton has 481 states and 807 transitions. Word has length 105 [2022-01-10 12:22:17,203 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:22:17,203 INFO L470 AbstractCegarLoop]: Abstraction has 481 states and 807 transitions. [2022-01-10 12:22:17,203 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.0) internal successors, (105), 3 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:22:17,204 INFO L276 IsEmpty]: Start isEmpty. Operand 481 states and 807 transitions. [2022-01-10 12:22:17,205 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2022-01-10 12:22:17,205 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:22:17,205 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 12:22:17,205 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-01-10 12:22:17,206 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 12:22:17,206 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:22:17,206 INFO L85 PathProgramCache]: Analyzing trace with hash 188825023, now seen corresponding path program 1 times [2022-01-10 12:22:17,207 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:22:17,207 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1970366874] [2022-01-10 12:22:17,207 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:22:17,207 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:22:17,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:22:17,314 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 12:22:17,314 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:22:17,314 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1970366874] [2022-01-10 12:22:17,314 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1970366874] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:22:17,314 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:22:17,315 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 12:22:17,315 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1023663333] [2022-01-10 12:22:17,315 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:22:17,315 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 12:22:17,315 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:22:17,315 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 12:22:17,316 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 12:22:17,316 INFO L87 Difference]: Start difference. First operand 481 states and 807 transitions. Second operand has 5 states, 5 states have (on average 21.2) internal successors, (106), 5 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:22:17,456 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:22:17,456 INFO L93 Difference]: Finished difference Result 1377 states and 2321 transitions. [2022-01-10 12:22:17,456 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 12:22:17,457 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 21.2) internal successors, (106), 5 states have internal predecessors, (106), 0 states have call successors, (0), 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 106 [2022-01-10 12:22:17,457 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:22:17,460 INFO L225 Difference]: With dead ends: 1377 [2022-01-10 12:22:17,460 INFO L226 Difference]: Without dead ends: 930 [2022-01-10 12:22:17,461 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 12:22:17,463 INFO L933 BasicCegarLoop]: 816 mSDtfsCounter, 3751 mSDsluCounter, 830 mSDsCounter, 0 mSdLazyCounter, 67 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3751 SdHoareTripleChecker+Valid, 1646 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 12:22:17,463 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3751 Valid, 1646 Invalid, 74 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 67 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 12:22:17,464 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 930 states. [2022-01-10 12:22:17,489 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 930 to 481. [2022-01-10 12:22:17,490 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 481 states, 480 states have (on average 1.6770833333333333) internal successors, (805), 480 states have internal predecessors, (805), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:22:17,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 481 states to 481 states and 805 transitions. [2022-01-10 12:22:17,491 INFO L78 Accepts]: Start accepts. Automaton has 481 states and 805 transitions. Word has length 106 [2022-01-10 12:22:17,492 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:22:17,492 INFO L470 AbstractCegarLoop]: Abstraction has 481 states and 805 transitions. [2022-01-10 12:22:17,492 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 21.2) internal successors, (106), 5 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:22:17,492 INFO L276 IsEmpty]: Start isEmpty. Operand 481 states and 805 transitions. [2022-01-10 12:22:17,493 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2022-01-10 12:22:17,493 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:22:17,493 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, 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 12:22:17,494 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-01-10 12:22:17,494 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 12:22:17,494 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:22:17,494 INFO L85 PathProgramCache]: Analyzing trace with hash 924472898, now seen corresponding path program 1 times [2022-01-10 12:22:17,494 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:22:17,494 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [464083384] [2022-01-10 12:22:17,494 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:22:17,494 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:22:17,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:22:17,624 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 12:22:17,625 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:22:17,625 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [464083384] [2022-01-10 12:22:17,625 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [464083384] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:22:17,625 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:22:17,625 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-10 12:22:17,625 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [40158661] [2022-01-10 12:22:17,625 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:22:17,626 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-10 12:22:17,626 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:22:17,626 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-10 12:22:17,626 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-01-10 12:22:17,626 INFO L87 Difference]: Start difference. First operand 481 states and 805 transitions. Second operand has 6 states, 6 states have (on average 18.0) internal successors, (108), 6 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:22:17,953 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:22:17,953 INFO L93 Difference]: Finished difference Result 2881 states and 4755 transitions. [2022-01-10 12:22:17,953 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-01-10 12:22:17,953 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 18.0) internal successors, (108), 6 states have internal predecessors, (108), 0 states have call successors, (0), 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 108 [2022-01-10 12:22:17,954 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:22:17,962 INFO L225 Difference]: With dead ends: 2881 [2022-01-10 12:22:17,962 INFO L226 Difference]: Without dead ends: 2678 [2022-01-10 12:22:17,963 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2022-01-10 12:22:17,964 INFO L933 BasicCegarLoop]: 1148 mSDtfsCounter, 5036 mSDsluCounter, 4607 mSDsCounter, 0 mSdLazyCounter, 123 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5036 SdHoareTripleChecker+Valid, 5755 SdHoareTripleChecker+Invalid, 147 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 123 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 12:22:17,964 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5036 Valid, 5755 Invalid, 147 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 123 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 12:22:17,967 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2678 states. [2022-01-10 12:22:18,024 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2678 to 906. [2022-01-10 12:22:18,025 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 906 states, 905 states have (on average 1.678453038674033) internal successors, (1519), 905 states have internal predecessors, (1519), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:22:18,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 906 states to 906 states and 1519 transitions. [2022-01-10 12:22:18,027 INFO L78 Accepts]: Start accepts. Automaton has 906 states and 1519 transitions. Word has length 108 [2022-01-10 12:22:18,027 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:22:18,027 INFO L470 AbstractCegarLoop]: Abstraction has 906 states and 1519 transitions. [2022-01-10 12:22:18,027 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 18.0) internal successors, (108), 6 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:22:18,028 INFO L276 IsEmpty]: Start isEmpty. Operand 906 states and 1519 transitions. [2022-01-10 12:22:18,029 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2022-01-10 12:22:18,029 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:22:18,029 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, 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 12:22:18,029 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-01-10 12:22:18,030 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 12:22:18,030 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:22:18,030 INFO L85 PathProgramCache]: Analyzing trace with hash -2138938860, now seen corresponding path program 1 times [2022-01-10 12:22:18,030 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:22:18,030 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [774197211] [2022-01-10 12:22:18,030 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:22:18,031 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:22:18,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:22:18,116 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 12:22:18,116 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:22:18,116 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [774197211] [2022-01-10 12:22:18,116 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [774197211] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:22:18,116 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:22:18,116 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 12:22:18,116 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [392902853] [2022-01-10 12:22:18,116 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:22:18,117 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 12:22:18,117 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:22:18,117 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 12:22:18,117 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 12:22:18,117 INFO L87 Difference]: Start difference. First operand 906 states and 1519 transitions. Second operand has 5 states, 5 states have (on average 21.8) internal successors, (109), 5 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:22:18,300 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:22:18,300 INFO L93 Difference]: Finished difference Result 2595 states and 4386 transitions. [2022-01-10 12:22:18,301 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 12:22:18,301 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 21.8) internal successors, (109), 5 states have internal predecessors, (109), 0 states have call successors, (0), 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 109 [2022-01-10 12:22:18,301 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:22:18,306 INFO L225 Difference]: With dead ends: 2595 [2022-01-10 12:22:18,306 INFO L226 Difference]: Without dead ends: 1726 [2022-01-10 12:22:18,307 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 12:22:18,308 INFO L933 BasicCegarLoop]: 1513 mSDtfsCounter, 2352 mSDsluCounter, 758 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2352 SdHoareTripleChecker+Valid, 2271 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 12:22:18,308 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2352 Valid, 2271 Invalid, 69 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 62 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 12:22:18,310 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1726 states. [2022-01-10 12:22:18,370 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1726 to 906. [2022-01-10 12:22:18,371 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 906 states, 905 states have (on average 1.676243093922652) internal successors, (1517), 905 states have internal predecessors, (1517), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:22:18,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 906 states to 906 states and 1517 transitions. [2022-01-10 12:22:18,373 INFO L78 Accepts]: Start accepts. Automaton has 906 states and 1517 transitions. Word has length 109 [2022-01-10 12:22:18,373 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:22:18,373 INFO L470 AbstractCegarLoop]: Abstraction has 906 states and 1517 transitions. [2022-01-10 12:22:18,373 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 21.8) internal successors, (109), 5 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:22:18,373 INFO L276 IsEmpty]: Start isEmpty. Operand 906 states and 1517 transitions. [2022-01-10 12:22:18,375 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2022-01-10 12:22:18,375 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:22:18,375 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:22:18,375 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-01-10 12:22:18,375 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 12:22:18,376 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:22:18,376 INFO L85 PathProgramCache]: Analyzing trace with hash 1495953184, now seen corresponding path program 1 times [2022-01-10 12:22:18,376 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:22:18,376 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [649202749] [2022-01-10 12:22:18,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:22:18,376 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:22:18,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:22:18,482 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 12:22:18,483 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:22:18,483 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [649202749] [2022-01-10 12:22:18,483 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [649202749] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:22:18,483 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:22:18,483 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-10 12:22:18,483 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [418775499] [2022-01-10 12:22:18,483 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:22:18,484 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-10 12:22:18,484 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:22:18,484 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-10 12:22:18,484 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-01-10 12:22:18,484 INFO L87 Difference]: Start difference. First operand 906 states and 1517 transitions. Second operand has 6 states, 6 states have (on average 18.333333333333332) internal successors, (110), 6 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:22:18,979 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:22:18,979 INFO L93 Difference]: Finished difference Result 5428 states and 8961 transitions. [2022-01-10 12:22:18,979 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-01-10 12:22:18,980 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 18.333333333333332) internal successors, (110), 6 states have internal predecessors, (110), 0 states have call successors, (0), 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 110 [2022-01-10 12:22:18,981 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:22:18,995 INFO L225 Difference]: With dead ends: 5428 [2022-01-10 12:22:18,995 INFO L226 Difference]: Without dead ends: 5066 [2022-01-10 12:22:18,998 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2022-01-10 12:22:19,000 INFO L933 BasicCegarLoop]: 1470 mSDtfsCounter, 4285 mSDsluCounter, 4134 mSDsCounter, 0 mSdLazyCounter, 111 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4285 SdHoareTripleChecker+Valid, 5604 SdHoareTripleChecker+Invalid, 135 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 111 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 12:22:19,000 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4285 Valid, 5604 Invalid, 135 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 111 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 12:22:19,004 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5066 states. [2022-01-10 12:22:19,119 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5066 to 1733. [2022-01-10 12:22:19,121 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1733 states, 1732 states have (on average 1.6830254041570438) internal successors, (2915), 1732 states have internal predecessors, (2915), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:22:19,125 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1733 states to 1733 states and 2915 transitions. [2022-01-10 12:22:19,125 INFO L78 Accepts]: Start accepts. Automaton has 1733 states and 2915 transitions. Word has length 110 [2022-01-10 12:22:19,125 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:22:19,125 INFO L470 AbstractCegarLoop]: Abstraction has 1733 states and 2915 transitions. [2022-01-10 12:22:19,126 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 18.333333333333332) internal successors, (110), 6 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:22:19,126 INFO L276 IsEmpty]: Start isEmpty. Operand 1733 states and 2915 transitions. [2022-01-10 12:22:19,128 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2022-01-10 12:22:19,128 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:22:19,128 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, 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 12:22:19,129 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-01-10 12:22:19,129 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 12:22:19,129 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:22:19,129 INFO L85 PathProgramCache]: Analyzing trace with hash -553341050, now seen corresponding path program 1 times [2022-01-10 12:22:19,129 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:22:19,129 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1843087500] [2022-01-10 12:22:19,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:22:19,129 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:22:19,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:22:19,264 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 12:22:19,264 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:22:19,264 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1843087500] [2022-01-10 12:22:19,264 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1843087500] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:22:19,264 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:22:19,264 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-10 12:22:19,264 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1957110128] [2022-01-10 12:22:19,265 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:22:19,265 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-01-10 12:22:19,265 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:22:19,265 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-01-10 12:22:19,265 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2022-01-10 12:22:19,265 INFO L87 Difference]: Start difference. First operand 1733 states and 2915 transitions. Second operand has 9 states, 9 states have (on average 12.222222222222221) internal successors, (110), 8 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:22:20,171 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:22:20,171 INFO L93 Difference]: Finished difference Result 6953 states and 11155 transitions. [2022-01-10 12:22:20,171 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-01-10 12:22:20,171 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 12.222222222222221) internal successors, (110), 8 states have internal predecessors, (110), 0 states have call successors, (0), 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 110 [2022-01-10 12:22:20,172 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:22:20,206 INFO L225 Difference]: With dead ends: 6953 [2022-01-10 12:22:20,206 INFO L226 Difference]: Without dead ends: 6328 [2022-01-10 12:22:20,209 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 68 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=153, Invalid=309, Unknown=0, NotChecked=0, Total=462 [2022-01-10 12:22:20,209 INFO L933 BasicCegarLoop]: 991 mSDtfsCounter, 5398 mSDsluCounter, 6655 mSDsCounter, 0 mSdLazyCounter, 306 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5398 SdHoareTripleChecker+Valid, 7646 SdHoareTripleChecker+Invalid, 327 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 306 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-10 12:22:20,210 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5398 Valid, 7646 Invalid, 327 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 306 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-10 12:22:20,214 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6328 states. [2022-01-10 12:22:20,451 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6328 to 3357. [2022-01-10 12:22:20,457 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3357 states, 3356 states have (on average 1.6927890345649583) internal successors, (5681), 3356 states have internal predecessors, (5681), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:22:20,467 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3357 states to 3357 states and 5681 transitions. [2022-01-10 12:22:20,467 INFO L78 Accepts]: Start accepts. Automaton has 3357 states and 5681 transitions. Word has length 110 [2022-01-10 12:22:20,468 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:22:20,468 INFO L470 AbstractCegarLoop]: Abstraction has 3357 states and 5681 transitions. [2022-01-10 12:22:20,468 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.222222222222221) internal successors, (110), 8 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:22:20,468 INFO L276 IsEmpty]: Start isEmpty. Operand 3357 states and 5681 transitions. [2022-01-10 12:22:20,475 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2022-01-10 12:22:20,475 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:22:20,475 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, 1, 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 12:22:20,475 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-01-10 12:22:20,475 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 12:22:20,476 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:22:20,476 INFO L85 PathProgramCache]: Analyzing trace with hash -631610579, now seen corresponding path program 1 times [2022-01-10 12:22:20,476 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:22:20,476 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [363609582] [2022-01-10 12:22:20,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:22:20,476 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:22:20,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:22:20,585 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 12:22:20,586 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:22:20,586 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [363609582] [2022-01-10 12:22:20,586 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [363609582] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:22:20,586 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:22:20,586 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 12:22:20,586 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1962461711] [2022-01-10 12:22:20,586 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:22:20,586 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 12:22:20,586 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:22:20,587 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 12:22:20,587 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 12:22:20,587 INFO L87 Difference]: Start difference. First operand 3357 states and 5681 transitions. Second operand has 4 states, 4 states have (on average 27.75) internal successors, (111), 4 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:22:20,900 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:22:20,900 INFO L93 Difference]: Finished difference Result 4411 states and 7293 transitions. [2022-01-10 12:22:20,904 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 12:22:20,905 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 27.75) internal successors, (111), 4 states have internal predecessors, (111), 0 states have call successors, (0), 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 111 [2022-01-10 12:22:20,905 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:22:20,920 INFO L225 Difference]: With dead ends: 4411 [2022-01-10 12:22:20,920 INFO L226 Difference]: Without dead ends: 3676 [2022-01-10 12:22:20,922 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 12:22:20,922 INFO L933 BasicCegarLoop]: 797 mSDtfsCounter, 841 mSDsluCounter, 1044 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 841 SdHoareTripleChecker+Valid, 1841 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 12:22:20,923 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [841 Valid, 1841 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 12:22:20,928 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3676 states. [2022-01-10 12:22:21,197 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3676 to 3357. [2022-01-10 12:22:21,203 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3357 states, 3356 states have (on average 1.6915971394517282) internal successors, (5677), 3356 states have internal predecessors, (5677), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:22:21,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3357 states to 3357 states and 5677 transitions. [2022-01-10 12:22:21,212 INFO L78 Accepts]: Start accepts. Automaton has 3357 states and 5677 transitions. Word has length 111 [2022-01-10 12:22:21,212 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:22:21,212 INFO L470 AbstractCegarLoop]: Abstraction has 3357 states and 5677 transitions. [2022-01-10 12:22:21,212 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 27.75) internal successors, (111), 4 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:22:21,212 INFO L276 IsEmpty]: Start isEmpty. Operand 3357 states and 5677 transitions. [2022-01-10 12:22:21,217 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2022-01-10 12:22:21,218 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:22:21,218 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, 1, 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 12:22:21,218 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-01-10 12:22:21,218 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 12:22:21,218 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:22:21,218 INFO L85 PathProgramCache]: Analyzing trace with hash 1554323468, now seen corresponding path program 1 times [2022-01-10 12:22:21,218 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:22:21,219 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [338293296] [2022-01-10 12:22:21,219 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:22:21,219 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:22:21,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:22:21,348 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 12:22:21,349 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:22:21,349 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [338293296] [2022-01-10 12:22:21,349 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [338293296] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:22:21,349 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:22:21,349 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 12:22:21,349 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2089979967] [2022-01-10 12:22:21,349 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:22:21,350 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 12:22:21,350 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:22:21,350 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 12:22:21,350 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 12:22:21,350 INFO L87 Difference]: Start difference. First operand 3357 states and 5677 transitions. Second operand has 5 states, 5 states have (on average 22.2) internal successors, (111), 4 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:22:22,533 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:22:22,533 INFO L93 Difference]: Finished difference Result 10228 states and 16317 transitions. [2022-01-10 12:22:22,534 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-01-10 12:22:22,534 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 22.2) internal successors, (111), 4 states have internal predecessors, (111), 0 states have call successors, (0), 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 111 [2022-01-10 12:22:22,534 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:22:22,549 INFO L225 Difference]: With dead ends: 10228 [2022-01-10 12:22:22,549 INFO L226 Difference]: Without dead ends: 6346 [2022-01-10 12:22:22,554 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 12:22:22,555 INFO L933 BasicCegarLoop]: 797 mSDtfsCounter, 3332 mSDsluCounter, 1968 mSDsCounter, 0 mSdLazyCounter, 78 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3332 SdHoareTripleChecker+Valid, 2765 SdHoareTripleChecker+Invalid, 107 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 78 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 12:22:22,555 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3332 Valid, 2765 Invalid, 107 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 78 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 12:22:22,559 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6346 states. [2022-01-10 12:22:22,834 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6346 to 3477. [2022-01-10 12:22:22,838 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3477 states, 3476 states have (on average 1.681530494821634) internal successors, (5845), 3476 states have internal predecessors, (5845), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:22:22,844 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3477 states to 3477 states and 5845 transitions. [2022-01-10 12:22:22,844 INFO L78 Accepts]: Start accepts. Automaton has 3477 states and 5845 transitions. Word has length 111 [2022-01-10 12:22:22,844 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:22:22,844 INFO L470 AbstractCegarLoop]: Abstraction has 3477 states and 5845 transitions. [2022-01-10 12:22:22,844 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 22.2) internal successors, (111), 4 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:22:22,844 INFO L276 IsEmpty]: Start isEmpty. Operand 3477 states and 5845 transitions. [2022-01-10 12:22:22,849 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2022-01-10 12:22:22,849 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:22:22,850 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, 1, 1, 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 12:22:22,850 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-01-10 12:22:22,850 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 12:22:22,850 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:22:22,850 INFO L85 PathProgramCache]: Analyzing trace with hash -1384929606, now seen corresponding path program 1 times [2022-01-10 12:22:22,850 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:22:22,850 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [641222080] [2022-01-10 12:22:22,850 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:22:22,851 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:22:22,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:22:22,963 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 12:22:22,964 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:22:22,964 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [641222080] [2022-01-10 12:22:22,964 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [641222080] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:22:22,964 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:22:22,964 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-01-10 12:22:22,964 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [731308252] [2022-01-10 12:22:22,964 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:22:22,964 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-01-10 12:22:22,964 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:22:22,965 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-01-10 12:22:22,965 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-01-10 12:22:22,965 INFO L87 Difference]: Start difference. First operand 3477 states and 5845 transitions. Second operand has 9 states, 9 states have (on average 12.444444444444445) internal successors, (112), 9 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:22:23,527 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:22:23,528 INFO L93 Difference]: Finished difference Result 5425 states and 8863 transitions. [2022-01-10 12:22:23,528 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-01-10 12:22:23,528 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 12.444444444444445) internal successors, (112), 9 states have internal predecessors, (112), 0 states have call successors, (0), 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 112 [2022-01-10 12:22:23,528 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:22:23,535 INFO L225 Difference]: With dead ends: 5425 [2022-01-10 12:22:23,535 INFO L226 Difference]: Without dead ends: 4254 [2022-01-10 12:22:23,537 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 59 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=145, Invalid=317, Unknown=0, NotChecked=0, Total=462 [2022-01-10 12:22:23,538 INFO L933 BasicCegarLoop]: 787 mSDtfsCounter, 3220 mSDsluCounter, 3764 mSDsCounter, 0 mSdLazyCounter, 74 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3220 SdHoareTripleChecker+Valid, 4551 SdHoareTripleChecker+Invalid, 79 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 74 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 12:22:23,538 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3220 Valid, 4551 Invalid, 79 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 74 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 12:22:23,541 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4254 states. [2022-01-10 12:22:23,807 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4254 to 3341. [2022-01-10 12:22:23,822 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3341 states, 3340 states have (on average 1.682934131736527) internal successors, (5621), 3340 states have internal predecessors, (5621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:22:23,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3341 states to 3341 states and 5621 transitions. [2022-01-10 12:22:23,827 INFO L78 Accepts]: Start accepts. Automaton has 3341 states and 5621 transitions. Word has length 112 [2022-01-10 12:22:23,827 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:22:23,827 INFO L470 AbstractCegarLoop]: Abstraction has 3341 states and 5621 transitions. [2022-01-10 12:22:23,828 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.444444444444445) internal successors, (112), 9 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:22:23,828 INFO L276 IsEmpty]: Start isEmpty. Operand 3341 states and 5621 transitions. [2022-01-10 12:22:23,832 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2022-01-10 12:22:23,833 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:22:23,833 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, 1, 1, 1, 1, 1, 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 12:22:23,833 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-01-10 12:22:23,833 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 12:22:23,833 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:22:23,833 INFO L85 PathProgramCache]: Analyzing trace with hash 364828204, now seen corresponding path program 1 times [2022-01-10 12:22:23,833 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:22:23,833 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1862061936] [2022-01-10 12:22:23,833 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:22:23,834 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:22:23,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:22:23,927 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 12:22:23,927 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:22:23,927 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1862061936] [2022-01-10 12:22:23,927 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1862061936] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:22:23,927 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:22:23,928 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 12:22:23,928 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1398287664] [2022-01-10 12:22:23,928 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:22:23,928 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 12:22:23,928 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:22:23,928 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 12:22:23,928 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 12:22:23,929 INFO L87 Difference]: Start difference. First operand 3341 states and 5621 transitions. Second operand has 5 states, 5 states have (on average 23.0) internal successors, (115), 4 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:22:24,765 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:22:24,766 INFO L93 Difference]: Finished difference Result 9097 states and 14901 transitions. [2022-01-10 12:22:24,766 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-01-10 12:22:24,766 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 23.0) internal successors, (115), 4 states have internal predecessors, (115), 0 states have call successors, (0), 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 115 [2022-01-10 12:22:24,766 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:22:24,779 INFO L225 Difference]: With dead ends: 9097 [2022-01-10 12:22:24,779 INFO L226 Difference]: Without dead ends: 7878 [2022-01-10 12:22:24,780 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 12:22:24,781 INFO L933 BasicCegarLoop]: 968 mSDtfsCounter, 1128 mSDsluCounter, 2633 mSDsCounter, 0 mSdLazyCounter, 59 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1128 SdHoareTripleChecker+Valid, 3601 SdHoareTripleChecker+Invalid, 91 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 59 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 12:22:24,781 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1128 Valid, 3601 Invalid, 91 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 59 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 12:22:24,785 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7878 states. [2022-01-10 12:22:25,321 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7878 to 6553. [2022-01-10 12:22:25,329 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6553 states, 6552 states have (on average 1.6785714285714286) internal successors, (10998), 6552 states have internal predecessors, (10998), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:22:25,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6553 states to 6553 states and 10998 transitions. [2022-01-10 12:22:25,344 INFO L78 Accepts]: Start accepts. Automaton has 6553 states and 10998 transitions. Word has length 115 [2022-01-10 12:22:25,344 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:22:25,344 INFO L470 AbstractCegarLoop]: Abstraction has 6553 states and 10998 transitions. [2022-01-10 12:22:25,345 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 23.0) internal successors, (115), 4 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:22:25,345 INFO L276 IsEmpty]: Start isEmpty. Operand 6553 states and 10998 transitions. [2022-01-10 12:22:25,356 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2022-01-10 12:22:25,357 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:22:25,357 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, 1, 1, 1, 1, 1, 1, 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 12:22:25,357 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-01-10 12:22:25,357 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 12:22:25,357 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:22:25,357 INFO L85 PathProgramCache]: Analyzing trace with hash 1122928795, now seen corresponding path program 1 times [2022-01-10 12:22:25,358 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:22:25,358 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1443289248] [2022-01-10 12:22:25,358 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:22:25,358 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:22:25,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:22:25,480 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 12:22:25,480 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:22:25,480 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1443289248] [2022-01-10 12:22:25,481 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1443289248] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:22:25,481 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:22:25,481 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-10 12:22:25,481 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1416304917] [2022-01-10 12:22:25,481 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:22:25,481 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-01-10 12:22:25,481 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:22:25,481 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-01-10 12:22:25,482 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2022-01-10 12:22:25,482 INFO L87 Difference]: Start difference. First operand 6553 states and 10998 transitions. Second operand has 9 states, 9 states have (on average 12.88888888888889) internal successors, (116), 8 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:22:28,410 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:22:28,410 INFO L93 Difference]: Finished difference Result 24530 states and 38998 transitions. [2022-01-10 12:22:28,411 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-01-10 12:22:28,411 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 12.88888888888889) internal successors, (116), 8 states have internal predecessors, (116), 0 states have call successors, (0), 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 116 [2022-01-10 12:22:28,411 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:22:28,443 INFO L225 Difference]: With dead ends: 24530 [2022-01-10 12:22:28,443 INFO L226 Difference]: Without dead ends: 22127 [2022-01-10 12:22:28,450 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 12:22:28,450 INFO L933 BasicCegarLoop]: 807 mSDtfsCounter, 5971 mSDsluCounter, 5623 mSDsCounter, 0 mSdLazyCounter, 264 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5971 SdHoareTripleChecker+Valid, 6430 SdHoareTripleChecker+Invalid, 285 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 264 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-10 12:22:28,451 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5971 Valid, 6430 Invalid, 285 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 264 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-10 12:22:28,465 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22127 states. [2022-01-10 12:22:29,541 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22127 to 13003. [2022-01-10 12:22:29,581 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13003 states, 13002 states have (on average 1.6807414243962466) internal successors, (21853), 13002 states have internal predecessors, (21853), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:22:29,606 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13003 states to 13003 states and 21853 transitions. [2022-01-10 12:22:29,607 INFO L78 Accepts]: Start accepts. Automaton has 13003 states and 21853 transitions. Word has length 116 [2022-01-10 12:22:29,607 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:22:29,607 INFO L470 AbstractCegarLoop]: Abstraction has 13003 states and 21853 transitions. [2022-01-10 12:22:29,607 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.88888888888889) internal successors, (116), 8 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:22:29,607 INFO L276 IsEmpty]: Start isEmpty. Operand 13003 states and 21853 transitions. [2022-01-10 12:22:29,633 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2022-01-10 12:22:29,634 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:22:29,634 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, 1, 1, 1, 1, 1, 1, 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 12:22:29,634 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-01-10 12:22:29,634 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 12:22:29,634 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:22:29,635 INFO L85 PathProgramCache]: Analyzing trace with hash 1991512702, now seen corresponding path program 1 times [2022-01-10 12:22:29,635 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:22:29,635 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [238862422] [2022-01-10 12:22:29,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:22:29,635 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:22:29,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:22:29,733 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 12:22:29,733 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:22:29,733 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [238862422] [2022-01-10 12:22:29,734 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [238862422] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:22:29,735 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:22:29,735 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-10 12:22:29,735 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [408570965] [2022-01-10 12:22:29,735 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:22:29,735 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-10 12:22:29,735 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:22:29,735 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-10 12:22:29,735 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-01-10 12:22:29,736 INFO L87 Difference]: Start difference. First operand 13003 states and 21853 transitions. Second operand has 6 states, 6 states have (on average 19.333333333333332) internal successors, (116), 6 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:22:33,794 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:22:33,794 INFO L93 Difference]: Finished difference Result 36282 states and 57307 transitions. [2022-01-10 12:22:33,794 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-01-10 12:22:33,795 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 19.333333333333332) internal successors, (116), 6 states have internal predecessors, (116), 0 states have call successors, (0), 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 116 [2022-01-10 12:22:33,795 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:22:33,838 INFO L225 Difference]: With dead ends: 36282 [2022-01-10 12:22:33,839 INFO L226 Difference]: Without dead ends: 31349 [2022-01-10 12:22:33,849 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=67, Invalid=143, Unknown=0, NotChecked=0, Total=210 [2022-01-10 12:22:33,850 INFO L933 BasicCegarLoop]: 1221 mSDtfsCounter, 2242 mSDsluCounter, 3811 mSDsCounter, 0 mSdLazyCounter, 161 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2242 SdHoareTripleChecker+Valid, 5032 SdHoareTripleChecker+Invalid, 180 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 161 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 12:22:33,850 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2242 Valid, 5032 Invalid, 180 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 161 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 12:22:33,872 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31349 states. [2022-01-10 12:22:35,192 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31349 to 13531. [2022-01-10 12:22:35,204 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13531 states, 13530 states have (on average 1.6728011825572802) internal successors, (22633), 13530 states have internal predecessors, (22633), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:22:35,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13531 states to 13531 states and 22633 transitions. [2022-01-10 12:22:35,222 INFO L78 Accepts]: Start accepts. Automaton has 13531 states and 22633 transitions. Word has length 116 [2022-01-10 12:22:35,222 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:22:35,222 INFO L470 AbstractCegarLoop]: Abstraction has 13531 states and 22633 transitions. [2022-01-10 12:22:35,222 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 19.333333333333332) internal successors, (116), 6 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:22:35,223 INFO L276 IsEmpty]: Start isEmpty. Operand 13531 states and 22633 transitions. [2022-01-10 12:22:35,240 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2022-01-10 12:22:35,240 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:22:35,241 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, 1, 1, 1, 1, 1, 1, 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 12:22:35,241 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-01-10 12:22:35,241 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 12:22:35,241 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:22:35,241 INFO L85 PathProgramCache]: Analyzing trace with hash 1525808642, now seen corresponding path program 1 times [2022-01-10 12:22:35,241 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:22:35,241 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1812361393] [2022-01-10 12:22:35,241 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:22:35,242 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:22:35,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:22:35,335 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 12:22:35,335 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:22:35,335 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1812361393] [2022-01-10 12:22:35,335 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1812361393] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:22:35,335 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:22:35,335 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 12:22:35,335 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [566808481] [2022-01-10 12:22:35,335 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:22:35,336 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 12:22:35,336 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:22:35,336 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 12:22:35,336 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 12:22:35,336 INFO L87 Difference]: Start difference. First operand 13531 states and 22633 transitions. Second operand has 5 states, 5 states have (on average 23.2) internal successors, (116), 4 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:22:38,197 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:22:38,197 INFO L93 Difference]: Finished difference Result 23310 states and 37471 transitions. [2022-01-10 12:22:38,198 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-01-10 12:22:38,198 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 23.2) internal successors, (116), 4 states have internal predecessors, (116), 0 states have call successors, (0), 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 116 [2022-01-10 12:22:38,198 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:22:38,225 INFO L225 Difference]: With dead ends: 23310 [2022-01-10 12:22:38,225 INFO L226 Difference]: Without dead ends: 22052 [2022-01-10 12:22:38,229 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2022-01-10 12:22:38,230 INFO L933 BasicCegarLoop]: 1319 mSDtfsCounter, 2473 mSDsluCounter, 3505 mSDsCounter, 0 mSdLazyCounter, 194 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2473 SdHoareTripleChecker+Valid, 4824 SdHoareTripleChecker+Invalid, 208 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 194 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-10 12:22:38,230 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2473 Valid, 4824 Invalid, 208 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 194 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-10 12:22:38,241 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22052 states. [2022-01-10 12:22:39,750 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22052 to 15087. [2022-01-10 12:22:39,767 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15087 states, 15086 states have (on average 1.6576295903486677) internal successors, (25007), 15086 states have internal predecessors, (25007), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:22:39,792 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15087 states to 15087 states and 25007 transitions. [2022-01-10 12:22:39,792 INFO L78 Accepts]: Start accepts. Automaton has 15087 states and 25007 transitions. Word has length 116 [2022-01-10 12:22:39,792 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:22:39,792 INFO L470 AbstractCegarLoop]: Abstraction has 15087 states and 25007 transitions. [2022-01-10 12:22:39,793 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 23.2) internal successors, (116), 4 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:22:39,793 INFO L276 IsEmpty]: Start isEmpty. Operand 15087 states and 25007 transitions. [2022-01-10 12:22:39,815 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2022-01-10 12:22:39,815 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:22:39,815 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, 1, 1, 1, 1, 1, 1, 1, 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 12:22:39,815 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-01-10 12:22:39,815 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 12:22:39,816 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:22:39,816 INFO L85 PathProgramCache]: Analyzing trace with hash 1750137413, now seen corresponding path program 1 times [2022-01-10 12:22:39,816 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:22:39,816 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2107067217] [2022-01-10 12:22:39,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:22:39,816 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:22:39,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:22:39,884 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 12:22:39,884 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:22:39,884 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2107067217] [2022-01-10 12:22:39,884 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2107067217] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:22:39,884 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:22:39,884 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 12:22:39,885 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [578091840] [2022-01-10 12:22:39,885 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:22:39,885 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 12:22:39,885 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:22:39,885 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 12:22:39,885 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 12:22:39,885 INFO L87 Difference]: Start difference. First operand 15087 states and 25007 transitions. Second operand has 5 states, 5 states have (on average 23.4) internal successors, (117), 5 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:22:43,020 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:22:43,020 INFO L93 Difference]: Finished difference Result 44763 states and 74199 transitions. [2022-01-10 12:22:43,021 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 12:22:43,021 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 23.4) internal successors, (117), 5 states have internal predecessors, (117), 0 states have call successors, (0), 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 117 [2022-01-10 12:22:43,021 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:22:43,063 INFO L225 Difference]: With dead ends: 44763 [2022-01-10 12:22:43,064 INFO L226 Difference]: Without dead ends: 29736 [2022-01-10 12:22:43,097 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-01-10 12:22:43,097 INFO L933 BasicCegarLoop]: 1494 mSDtfsCounter, 2301 mSDsluCounter, 773 mSDsCounter, 0 mSdLazyCounter, 53 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2301 SdHoareTripleChecker+Valid, 2267 SdHoareTripleChecker+Invalid, 65 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 53 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 12:22:43,097 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2301 Valid, 2267 Invalid, 65 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 53 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 12:22:43,113 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29736 states. [2022-01-10 12:22:44,817 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29736 to 15087. [2022-01-10 12:22:44,846 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15087 states, 15086 states have (on average 1.6574970171019487) internal successors, (25005), 15086 states have internal predecessors, (25005), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:22:44,870 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15087 states to 15087 states and 25005 transitions. [2022-01-10 12:22:44,870 INFO L78 Accepts]: Start accepts. Automaton has 15087 states and 25005 transitions. Word has length 117 [2022-01-10 12:22:44,871 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:22:44,871 INFO L470 AbstractCegarLoop]: Abstraction has 15087 states and 25005 transitions. [2022-01-10 12:22:44,871 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 23.4) internal successors, (117), 5 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:22:44,871 INFO L276 IsEmpty]: Start isEmpty. Operand 15087 states and 25005 transitions. [2022-01-10 12:22:44,890 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2022-01-10 12:22:44,890 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:22:44,890 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, 1, 1, 1, 1, 1, 1, 1, 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 12:22:44,890 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-01-10 12:22:44,891 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 12:22:44,891 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:22:44,891 INFO L85 PathProgramCache]: Analyzing trace with hash -2029309434, now seen corresponding path program 1 times [2022-01-10 12:22:44,891 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:22:44,891 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [212041739] [2022-01-10 12:22:44,891 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:22:44,891 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:22:44,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:22:44,962 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 12:22:44,963 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:22:44,963 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [212041739] [2022-01-10 12:22:44,963 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [212041739] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:22:44,963 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:22:44,963 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 12:22:44,963 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [691089788] [2022-01-10 12:22:44,963 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:22:44,963 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 12:22:44,964 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:22:44,964 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 12:22:44,964 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 12:22:44,964 INFO L87 Difference]: Start difference. First operand 15087 states and 25005 transitions. Second operand has 5 states, 5 states have (on average 23.4) internal successors, (117), 5 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:22:47,454 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:22:47,454 INFO L93 Difference]: Finished difference Result 26659 states and 42897 transitions. [2022-01-10 12:22:47,454 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 12:22:47,454 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 23.4) internal successors, (117), 5 states have internal predecessors, (117), 0 states have call successors, (0), 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 117 [2022-01-10 12:22:47,455 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:22:47,477 INFO L225 Difference]: With dead ends: 26659 [2022-01-10 12:22:47,477 INFO L226 Difference]: Without dead ends: 19682 [2022-01-10 12:22:47,485 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 12:22:47,485 INFO L933 BasicCegarLoop]: 787 mSDtfsCounter, 1859 mSDsluCounter, 1138 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1859 SdHoareTripleChecker+Valid, 1925 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 12:22:47,486 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1859 Valid, 1925 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 12:22:47,496 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19682 states. [2022-01-10 12:22:49,114 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19682 to 15047. [2022-01-10 12:22:49,126 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15047 states, 15046 states have (on average 1.653927954273561) internal successors, (24885), 15046 states have internal predecessors, (24885), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:22:49,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15047 states to 15047 states and 24885 transitions. [2022-01-10 12:22:49,146 INFO L78 Accepts]: Start accepts. Automaton has 15047 states and 24885 transitions. Word has length 117 [2022-01-10 12:22:49,146 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:22:49,146 INFO L470 AbstractCegarLoop]: Abstraction has 15047 states and 24885 transitions. [2022-01-10 12:22:49,146 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 23.4) internal successors, (117), 5 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:22:49,146 INFO L276 IsEmpty]: Start isEmpty. Operand 15047 states and 24885 transitions. [2022-01-10 12:22:49,162 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2022-01-10 12:22:49,162 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:22:49,163 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:22:49,163 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-01-10 12:22:49,163 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 12:22:49,163 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:22:49,163 INFO L85 PathProgramCache]: Analyzing trace with hash -874287492, now seen corresponding path program 1 times [2022-01-10 12:22:49,163 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:22:49,163 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [851242067] [2022-01-10 12:22:49,163 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:22:49,164 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:22:49,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:22:49,252 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 12:22:49,252 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:22:49,252 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [851242067] [2022-01-10 12:22:49,252 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [851242067] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:22:49,252 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:22:49,252 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 12:22:49,252 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1203843081] [2022-01-10 12:22:49,252 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:22:49,253 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 12:22:49,253 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:22:49,253 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 12:22:49,253 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 12:22:49,253 INFO L87 Difference]: Start difference. First operand 15047 states and 24885 transitions. Second operand has 5 states, 5 states have (on average 23.4) internal successors, (117), 4 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:22:54,500 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:22:54,500 INFO L93 Difference]: Finished difference Result 35412 states and 55365 transitions. [2022-01-10 12:22:54,501 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-01-10 12:22:54,501 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 23.4) internal successors, (117), 4 states have internal predecessors, (117), 0 states have call successors, (0), 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 117 [2022-01-10 12:22:54,501 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:22:54,541 INFO L225 Difference]: With dead ends: 35412 [2022-01-10 12:22:54,541 INFO L226 Difference]: Without dead ends: 31167 [2022-01-10 12:22:54,549 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2022-01-10 12:22:54,551 INFO L933 BasicCegarLoop]: 1535 mSDtfsCounter, 1638 mSDsluCounter, 3033 mSDsCounter, 0 mSdLazyCounter, 174 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1638 SdHoareTripleChecker+Valid, 4568 SdHoareTripleChecker+Invalid, 188 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 174 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 12:22:54,551 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1638 Valid, 4568 Invalid, 188 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 174 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 12:22:54,570 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31167 states. [2022-01-10 12:22:56,818 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31167 to 16707. [2022-01-10 12:22:56,830 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16707 states, 16706 states have (on average 1.6296540165210105) internal successors, (27225), 16706 states have internal predecessors, (27225), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:22:56,852 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16707 states to 16707 states and 27225 transitions. [2022-01-10 12:22:56,852 INFO L78 Accepts]: Start accepts. Automaton has 16707 states and 27225 transitions. Word has length 117 [2022-01-10 12:22:56,852 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:22:56,852 INFO L470 AbstractCegarLoop]: Abstraction has 16707 states and 27225 transitions. [2022-01-10 12:22:56,852 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 23.4) internal successors, (117), 4 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:22:56,852 INFO L276 IsEmpty]: Start isEmpty. Operand 16707 states and 27225 transitions. [2022-01-10 12:22:56,870 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2022-01-10 12:22:56,870 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:22:56,870 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:22:56,870 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-01-10 12:22:56,870 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 12:22:56,871 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:22:56,871 INFO L85 PathProgramCache]: Analyzing trace with hash 514039698, now seen corresponding path program 1 times [2022-01-10 12:22:56,871 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:22:56,871 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [491856419] [2022-01-10 12:22:56,871 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:22:56,872 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:22:56,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:22:56,954 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 12:22:56,955 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:22:56,955 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [491856419] [2022-01-10 12:22:56,955 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [491856419] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:22:56,955 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:22:56,955 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-10 12:22:56,955 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [106752321] [2022-01-10 12:22:56,955 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:22:56,956 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-10 12:22:56,956 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:22:56,957 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-10 12:22:56,957 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-01-10 12:22:56,957 INFO L87 Difference]: Start difference. First operand 16707 states and 27225 transitions. Second operand has 7 states, 7 states have (on average 16.857142857142858) internal successors, (118), 7 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:22:59,925 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:22:59,925 INFO L93 Difference]: Finished difference Result 26843 states and 42358 transitions. [2022-01-10 12:22:59,926 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-01-10 12:22:59,926 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 16.857142857142858) internal successors, (118), 7 states have internal predecessors, (118), 0 states have call successors, (0), 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 118 [2022-01-10 12:22:59,926 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:22:59,947 INFO L225 Difference]: With dead ends: 26843 [2022-01-10 12:22:59,947 INFO L226 Difference]: Without dead ends: 18558 [2022-01-10 12:22:59,954 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=64, Invalid=118, Unknown=0, NotChecked=0, Total=182 [2022-01-10 12:22:59,955 INFO L933 BasicCegarLoop]: 766 mSDtfsCounter, 2387 mSDsluCounter, 2134 mSDsCounter, 0 mSdLazyCounter, 61 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2387 SdHoareTripleChecker+Valid, 2900 SdHoareTripleChecker+Invalid, 65 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 61 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 12:22:59,956 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2387 Valid, 2900 Invalid, 65 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 61 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 12:22:59,977 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18558 states. [2022-01-10 12:23:01,773 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18558 to 14231. [2022-01-10 12:23:01,785 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14231 states, 14230 states have (on average 1.648699929725931) internal successors, (23461), 14230 states have internal predecessors, (23461), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:23:01,803 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14231 states to 14231 states and 23461 transitions. [2022-01-10 12:23:01,804 INFO L78 Accepts]: Start accepts. Automaton has 14231 states and 23461 transitions. Word has length 118 [2022-01-10 12:23:01,804 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:23:01,804 INFO L470 AbstractCegarLoop]: Abstraction has 14231 states and 23461 transitions. [2022-01-10 12:23:01,810 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.857142857142858) internal successors, (118), 7 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:23:01,810 INFO L276 IsEmpty]: Start isEmpty. Operand 14231 states and 23461 transitions. [2022-01-10 12:23:01,853 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2022-01-10 12:23:01,854 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:23:01,854 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:23:01,854 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-01-10 12:23:01,855 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 12:23:01,855 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:23:01,855 INFO L85 PathProgramCache]: Analyzing trace with hash 1298901019, now seen corresponding path program 1 times [2022-01-10 12:23:01,855 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:23:01,856 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1199067695] [2022-01-10 12:23:01,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:23:01,856 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:23:01,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:23:01,963 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 12:23:01,963 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:23:01,963 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1199067695] [2022-01-10 12:23:01,963 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1199067695] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:23:01,963 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:23:01,963 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 12:23:01,963 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1629829611] [2022-01-10 12:23:01,964 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:23:01,964 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 12:23:01,964 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:23:01,964 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 12:23:01,964 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 12:23:01,964 INFO L87 Difference]: Start difference. First operand 14231 states and 23461 transitions. Second operand has 3 states, 3 states have (on average 44.333333333333336) internal successors, (133), 3 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:23:05,294 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:23:05,296 INFO L93 Difference]: Finished difference Result 40857 states and 67103 transitions. [2022-01-10 12:23:05,296 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 12:23:05,296 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 44.333333333333336) internal successors, (133), 3 states have internal predecessors, (133), 0 states have call successors, (0), 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 133 [2022-01-10 12:23:05,296 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:23:05,333 INFO L225 Difference]: With dead ends: 40857 [2022-01-10 12:23:05,333 INFO L226 Difference]: Without dead ends: 26712 [2022-01-10 12:23:05,345 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 12:23:05,346 INFO L933 BasicCegarLoop]: 777 mSDtfsCounter, 727 mSDsluCounter, 679 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 727 SdHoareTripleChecker+Valid, 1456 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 12:23:05,346 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [727 Valid, 1456 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 12:23:05,359 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26712 states. [2022-01-10 12:23:07,478 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26712 to 19671. [2022-01-10 12:23:07,493 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19671 states, 19670 states have (on average 1.6850533807829182) internal successors, (33145), 19670 states have internal predecessors, (33145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:23:07,520 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19671 states to 19671 states and 33145 transitions. [2022-01-10 12:23:07,520 INFO L78 Accepts]: Start accepts. Automaton has 19671 states and 33145 transitions. Word has length 133 [2022-01-10 12:23:07,520 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:23:07,520 INFO L470 AbstractCegarLoop]: Abstraction has 19671 states and 33145 transitions. [2022-01-10 12:23:07,521 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 44.333333333333336) internal successors, (133), 3 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:23:07,521 INFO L276 IsEmpty]: Start isEmpty. Operand 19671 states and 33145 transitions. [2022-01-10 12:23:07,545 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2022-01-10 12:23:07,545 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:23:07,545 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:23:07,545 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-01-10 12:23:07,545 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 12:23:07,546 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:23:07,546 INFO L85 PathProgramCache]: Analyzing trace with hash 2015454682, now seen corresponding path program 1 times [2022-01-10 12:23:07,546 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:23:07,546 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2034297640] [2022-01-10 12:23:07,546 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:23:07,546 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:23:07,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:23:07,593 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 12:23:07,593 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:23:07,593 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2034297640] [2022-01-10 12:23:07,594 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2034297640] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:23:07,594 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:23:07,594 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 12:23:07,594 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [163152302] [2022-01-10 12:23:07,595 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:23:07,595 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 12:23:07,595 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:23:07,595 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 12:23:07,595 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 12:23:07,595 INFO L87 Difference]: Start difference. First operand 19671 states and 33145 transitions. Second operand has 3 states, 3 states have (on average 44.666666666666664) internal successors, (134), 3 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:23:11,756 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:23:11,757 INFO L93 Difference]: Finished difference Result 58777 states and 99099 transitions. [2022-01-10 12:23:11,757 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 12:23:11,757 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 44.666666666666664) internal successors, (134), 3 states have internal predecessors, (134), 0 states have call successors, (0), 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 134 [2022-01-10 12:23:11,757 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:23:11,808 INFO L225 Difference]: With dead ends: 58777 [2022-01-10 12:23:11,808 INFO L226 Difference]: Without dead ends: 39192 [2022-01-10 12:23:11,823 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 12:23:11,827 INFO L933 BasicCegarLoop]: 777 mSDtfsCounter, 725 mSDsluCounter, 773 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 725 SdHoareTripleChecker+Valid, 1550 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 12:23:11,827 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [725 Valid, 1550 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 12:23:11,848 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39192 states. [2022-01-10 12:23:14,712 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39192 to 32151. [2022-01-10 12:23:14,738 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32151 states, 32150 states have (on average 1.723950233281493) internal successors, (55425), 32150 states have internal predecessors, (55425), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:23:14,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32151 states to 32151 states and 55425 transitions. [2022-01-10 12:23:14,918 INFO L78 Accepts]: Start accepts. Automaton has 32151 states and 55425 transitions. Word has length 134 [2022-01-10 12:23:14,918 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:23:14,923 INFO L470 AbstractCegarLoop]: Abstraction has 32151 states and 55425 transitions. [2022-01-10 12:23:14,923 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 44.666666666666664) internal successors, (134), 3 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:23:14,923 INFO L276 IsEmpty]: Start isEmpty. Operand 32151 states and 55425 transitions. [2022-01-10 12:23:14,960 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2022-01-10 12:23:14,960 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:23:14,960 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:23:14,960 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-01-10 12:23:14,960 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 12:23:14,961 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:23:14,961 INFO L85 PathProgramCache]: Analyzing trace with hash -1097443532, now seen corresponding path program 1 times [2022-01-10 12:23:14,961 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:23:14,961 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [508975561] [2022-01-10 12:23:14,961 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:23:14,961 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:23:15,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:23:15,089 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 12:23:15,089 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:23:15,090 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [508975561] [2022-01-10 12:23:15,090 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [508975561] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:23:15,090 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:23:15,090 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 12:23:15,090 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1394487841] [2022-01-10 12:23:15,090 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:23:15,090 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 12:23:15,091 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:23:15,091 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 12:23:15,091 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 12:23:15,091 INFO L87 Difference]: Start difference. First operand 32151 states and 55425 transitions. Second operand has 3 states, 3 states have (on average 45.0) internal successors, (135), 3 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)