/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_spec3_product30.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-a10ec3b [2022-01-10 12:15:38,392 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-10 12:15:38,394 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-10 12:15:38,437 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-01-10 12:15:38,437 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-01-10 12:15:38,439 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-01-10 12:15:38,442 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-01-10 12:15:38,446 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-01-10 12:15:38,446 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-01-10 12:15:38,447 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-01-10 12:15:38,448 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-01-10 12:15:38,448 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-01-10 12:15:38,448 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-10 12:15:38,449 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-10 12:15:38,450 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-10 12:15:38,450 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-10 12:15:38,451 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-10 12:15:38,451 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-10 12:15:38,452 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-10 12:15:38,453 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-10 12:15:38,454 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-10 12:15:38,459 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-10 12:15:38,462 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-10 12:15:38,463 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-10 12:15:38,470 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-01-10 12:15:38,470 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-01-10 12:15:38,470 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-01-10 12:15:38,471 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-01-10 12:15:38,471 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-01-10 12:15:38,472 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-01-10 12:15:38,472 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-01-10 12:15:38,472 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-01-10 12:15:38,473 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-01-10 12:15:38,473 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-01-10 12:15:38,474 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-01-10 12:15:38,474 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-01-10 12:15:38,474 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-01-10 12:15:38,474 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-01-10 12:15:38,475 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-10 12:15:38,475 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-10 12:15:38,476 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-10 12:15:38,480 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 12:15:38,506 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-10 12:15:38,507 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-10 12:15:38,507 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-10 12:15:38,507 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-10 12:15:38,508 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-10 12:15:38,508 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-10 12:15:38,508 INFO L138 SettingsManager]: * Use SBE=true [2022-01-10 12:15:38,508 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-10 12:15:38,508 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-10 12:15:38,508 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-10 12:15:38,508 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-10 12:15:38,508 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-10 12:15:38,508 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-10 12:15:38,508 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-01-10 12:15:38,509 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-01-10 12:15:38,509 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-01-10 12:15:38,509 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-10 12:15:38,509 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-10 12:15:38,509 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-10 12:15:38,509 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-10 12:15:38,509 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-10 12:15:38,509 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 12:15:38,509 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-10 12:15:38,509 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-10 12:15:38,509 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-10 12:15:38,509 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-10 12:15:38,510 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-01-10 12:15:38,510 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-10 12:15:38,510 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-10 12:15:38,510 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-10 12:15:38,510 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-01-10 12:15:38,510 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-01-10 12:15:38,510 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-01-10 12:15:38,510 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-10 12:15:38,668 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-10 12:15:38,682 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-10 12:15:38,683 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-10 12:15:38,684 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-10 12:15:38,685 INFO L275 PluginConnector]: CDTParser initialized [2022-01-10 12:15:38,685 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/email_spec3_product30.cil.c [2022-01-10 12:15:38,723 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ee0a242b7/a15b3501dc12420dbd19060c02009aa2/FLAG6f8f51ec3 [2022-01-10 12:15:39,195 INFO L306 CDTParser]: Found 1 translation units. [2022-01-10 12:15:39,195 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/email_spec3_product30.cil.c [2022-01-10 12:15:39,208 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ee0a242b7/a15b3501dc12420dbd19060c02009aa2/FLAG6f8f51ec3 [2022-01-10 12:15:39,508 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ee0a242b7/a15b3501dc12420dbd19060c02009aa2 [2022-01-10 12:15:39,511 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-10 12:15:39,513 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-01-10 12:15:39,516 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-10 12:15:39,516 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-10 12:15:39,518 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-10 12:15:39,518 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 12:15:39" (1/1) ... [2022-01-10 12:15:39,519 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7b8bbcba and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:15:39, skipping insertion in model container [2022-01-10 12:15:39,519 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 12:15:39" (1/1) ... [2022-01-10 12:15:39,538 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-10 12:15:39,604 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-10 12:15:39,776 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/product-lines/email_spec3_product30.cil.c[5243,5256] [2022-01-10 12:15:39,983 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 12:15:39,999 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2022-01-10 12:15:40,012 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-10 12:15:40,028 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/product-lines/email_spec3_product30.cil.c[5243,5256] [2022-01-10 12:15:40,101 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 12:15:40,113 INFO L203 MainTranslator]: Completed pre-run [2022-01-10 12:15:40,131 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/product-lines/email_spec3_product30.cil.c[5243,5256] [2022-01-10 12:15:40,174 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 12:15:40,197 INFO L208 MainTranslator]: Completed translation [2022-01-10 12:15:40,197 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:15:40 WrapperNode [2022-01-10 12:15:40,197 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-10 12:15:40,198 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-10 12:15:40,198 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-10 12:15:40,198 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-10 12:15:40,203 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:15:40" (1/1) ... [2022-01-10 12:15:40,239 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:15:40" (1/1) ... [2022-01-10 12:15:40,327 INFO L137 Inliner]: procedures = 134, calls = 227, calls flagged for inlining = 134, calls inlined = 169, statements flattened = 2591 [2022-01-10 12:15:40,328 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-10 12:15:40,329 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-10 12:15:40,329 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-10 12:15:40,329 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-10 12:15:40,335 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:15:40" (1/1) ... [2022-01-10 12:15:40,335 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:15:40" (1/1) ... [2022-01-10 12:15:40,348 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:15:40" (1/1) ... [2022-01-10 12:15:40,349 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:15:40" (1/1) ... [2022-01-10 12:15:40,393 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:15:40" (1/1) ... [2022-01-10 12:15:40,404 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:15:40" (1/1) ... [2022-01-10 12:15:40,424 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:15:40" (1/1) ... [2022-01-10 12:15:40,433 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-10 12:15:40,434 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-10 12:15:40,434 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-10 12:15:40,434 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-10 12:15:40,446 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:15:40" (1/1) ... [2022-01-10 12:15:40,451 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 12:15:40,460 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 12:15:40,471 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 12:15:40,480 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 12:15:40,510 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2022-01-10 12:15:40,511 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-10 12:15:40,511 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-01-10 12:15:40,511 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-10 12:15:40,511 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-10 12:15:40,658 INFO L234 CfgBuilder]: Building ICFG [2022-01-10 12:15:40,659 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-10 12:15:41,704 INFO L275 CfgBuilder]: Performing block encoding [2022-01-10 12:15:41,718 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-10 12:15:41,718 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-01-10 12:15:41,720 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 12:15:41 BoogieIcfgContainer [2022-01-10 12:15:41,720 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-10 12:15:41,721 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2022-01-10 12:15:41,721 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2022-01-10 12:15:41,722 INFO L275 PluginConnector]: IcfgTransformer initialized [2022-01-10 12:15:41,724 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 12:15:41" (1/1) ... [2022-01-10 12:15:42,051 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 10.01 12:15:42 BasicIcfg [2022-01-10 12:15:42,052 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2022-01-10 12:15:42,054 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-10 12:15:42,055 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-10 12:15:42,057 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-10 12:15:42,057 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.01 12:15:39" (1/4) ... [2022-01-10 12:15:42,058 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@63d7cf18 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 12:15:42, skipping insertion in model container [2022-01-10 12:15:42,058 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:15:40" (2/4) ... [2022-01-10 12:15:42,058 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@63d7cf18 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 12:15:42, skipping insertion in model container [2022-01-10 12:15:42,058 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 12:15:41" (3/4) ... [2022-01-10 12:15:42,058 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@63d7cf18 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.01 12:15:42, skipping insertion in model container [2022-01-10 12:15:42,058 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 10.01 12:15:42" (4/4) ... [2022-01-10 12:15:42,059 INFO L111 eAbstractionObserver]: Analyzing ICFG email_spec3_product30.cil.cTransformedIcfg [2022-01-10 12:15:42,063 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-10 12:15:42,063 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2022-01-10 12:15:42,104 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-10 12:15:42,108 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 12:15:42,108 INFO L340 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2022-01-10 12:15:42,124 INFO L276 IsEmpty]: Start isEmpty. Operand has 594 states, 589 states have (on average 1.696095076400679) internal successors, (999), 593 states have internal predecessors, (999), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:15:42,132 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2022-01-10 12:15:42,132 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:15:42,133 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 12:15:42,133 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-01-10 12:15:42,137 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:15:42,137 INFO L85 PathProgramCache]: Analyzing trace with hash 1886998884, now seen corresponding path program 1 times [2022-01-10 12:15:42,143 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:15:42,143 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [483234971] [2022-01-10 12:15:42,143 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:15:42,144 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:15:42,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:15:42,472 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 12:15:42,472 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:15:42,472 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [483234971] [2022-01-10 12:15:42,473 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [483234971] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:15:42,473 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:15:42,473 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 12:15:42,474 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [486148809] [2022-01-10 12:15:42,474 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:15:42,477 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-01-10 12:15:42,477 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:15:42,492 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-01-10 12:15:42,492 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-01-10 12:15:42,495 INFO L87 Difference]: Start difference. First operand has 594 states, 589 states have (on average 1.696095076400679) internal successors, (999), 593 states have internal predecessors, (999), 0 states have call successors, (0), 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 32.0) internal successors, (64), 2 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:15:42,545 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:15:42,545 INFO L93 Difference]: Finished difference Result 925 states and 1536 transitions. [2022-01-10 12:15:42,546 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-01-10 12:15:42,547 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 32.0) internal successors, (64), 2 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 64 [2022-01-10 12:15:42,547 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:15:42,557 INFO L225 Difference]: With dead ends: 925 [2022-01-10 12:15:42,558 INFO L226 Difference]: Without dead ends: 524 [2022-01-10 12:15:42,561 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 12:15:42,564 INFO L933 BasicCegarLoop]: 989 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, 989 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 12:15:42,564 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 989 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 12:15:42,577 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 524 states. [2022-01-10 12:15:42,616 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 524 to 524. [2022-01-10 12:15:42,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 524 states, 520 states have (on average 1.7038461538461538) internal successors, (886), 523 states have internal predecessors, (886), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:15:42,622 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 524 states to 524 states and 886 transitions. [2022-01-10 12:15:42,623 INFO L78 Accepts]: Start accepts. Automaton has 524 states and 886 transitions. Word has length 64 [2022-01-10 12:15:42,624 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:15:42,624 INFO L470 AbstractCegarLoop]: Abstraction has 524 states and 886 transitions. [2022-01-10 12:15:42,624 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 32.0) internal successors, (64), 2 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:15:42,624 INFO L276 IsEmpty]: Start isEmpty. Operand 524 states and 886 transitions. [2022-01-10 12:15:42,627 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-01-10 12:15:42,627 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:15:42,627 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 12:15:42,627 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-10 12:15:42,628 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-01-10 12:15:42,628 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:15:42,628 INFO L85 PathProgramCache]: Analyzing trace with hash 1629032791, now seen corresponding path program 1 times [2022-01-10 12:15:42,628 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:15:42,628 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [844184061] [2022-01-10 12:15:42,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:15:42,629 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:15:42,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:15:42,883 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 12:15:42,883 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:15:42,883 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [844184061] [2022-01-10 12:15:42,883 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [844184061] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:15:42,883 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:15:42,884 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 12:15:42,884 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [603284305] [2022-01-10 12:15:42,884 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:15:42,885 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 12:15:42,885 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:15:42,886 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 12:15:42,886 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 12:15:42,886 INFO L87 Difference]: Start difference. First operand 524 states and 886 transitions. Second operand has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:15:42,962 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:15:42,963 INFO L93 Difference]: Finished difference Result 1029 states and 1744 transitions. [2022-01-10 12:15:42,963 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 12:15:42,963 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 65 [2022-01-10 12:15:42,963 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:15:42,967 INFO L225 Difference]: With dead ends: 1029 [2022-01-10 12:15:42,967 INFO L226 Difference]: Without dead ends: 524 [2022-01-10 12:15:42,968 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 12:15:42,969 INFO L933 BasicCegarLoop]: 867 mSDtfsCounter, 861 mSDsluCounter, 13 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 861 SdHoareTripleChecker+Valid, 880 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 12:15:42,969 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [861 Valid, 880 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 12:15:42,971 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 524 states. [2022-01-10 12:15:43,001 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 524 to 524. [2022-01-10 12:15:43,003 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 524 states, 520 states have (on average 1.7) internal successors, (884), 523 states have internal predecessors, (884), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:15:43,005 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 524 states to 524 states and 884 transitions. [2022-01-10 12:15:43,005 INFO L78 Accepts]: Start accepts. Automaton has 524 states and 884 transitions. Word has length 65 [2022-01-10 12:15:43,005 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:15:43,005 INFO L470 AbstractCegarLoop]: Abstraction has 524 states and 884 transitions. [2022-01-10 12:15:43,005 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:15:43,006 INFO L276 IsEmpty]: Start isEmpty. Operand 524 states and 884 transitions. [2022-01-10 12:15:43,007 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-01-10 12:15:43,008 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:15:43,008 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 12:15:43,008 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-01-10 12:15:43,008 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-01-10 12:15:43,008 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:15:43,009 INFO L85 PathProgramCache]: Analyzing trace with hash 1905782807, now seen corresponding path program 1 times [2022-01-10 12:15:43,009 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:15:43,009 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [70003688] [2022-01-10 12:15:43,009 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:15:43,009 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:15:43,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:15:43,160 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 12:15:43,161 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:15:43,161 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [70003688] [2022-01-10 12:15:43,161 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [70003688] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:15:43,161 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:15:43,161 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 12:15:43,161 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [736957916] [2022-01-10 12:15:43,161 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:15:43,162 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 12:15:43,162 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:15:43,162 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 12:15:43,162 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 12:15:43,163 INFO L87 Difference]: Start difference. First operand 524 states and 884 transitions. Second operand has 5 states, 5 states have (on average 13.4) internal successors, (67), 5 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:15:43,371 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:15:43,372 INFO L93 Difference]: Finished difference Result 2488 states and 4216 transitions. [2022-01-10 12:15:43,372 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-10 12:15:43,372 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.4) internal successors, (67), 5 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67 [2022-01-10 12:15:43,372 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:15:43,383 INFO L225 Difference]: With dead ends: 2488 [2022-01-10 12:15:43,384 INFO L226 Difference]: Without dead ends: 1988 [2022-01-10 12:15:43,391 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 12:15:43,393 INFO L933 BasicCegarLoop]: 1691 mSDtfsCounter, 4203 mSDsluCounter, 2524 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4203 SdHoareTripleChecker+Valid, 4215 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 12:15:43,394 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4203 Valid, 4215 Invalid, 82 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 62 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 12:15:43,398 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1988 states. [2022-01-10 12:15:43,439 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1988 to 524. [2022-01-10 12:15:43,440 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 524 states, 520 states have (on average 1.698076923076923) internal successors, (883), 523 states have internal predecessors, (883), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:15:43,441 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 524 states to 524 states and 883 transitions. [2022-01-10 12:15:43,441 INFO L78 Accepts]: Start accepts. Automaton has 524 states and 883 transitions. Word has length 67 [2022-01-10 12:15:43,442 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:15:43,442 INFO L470 AbstractCegarLoop]: Abstraction has 524 states and 883 transitions. [2022-01-10 12:15:43,442 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.4) internal successors, (67), 5 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:15:43,442 INFO L276 IsEmpty]: Start isEmpty. Operand 524 states and 883 transitions. [2022-01-10 12:15:43,446 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-01-10 12:15:43,446 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:15:43,447 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 12:15:43,447 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-01-10 12:15:43,447 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-01-10 12:15:43,447 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:15:43,448 INFO L85 PathProgramCache]: Analyzing trace with hash -645556727, now seen corresponding path program 1 times [2022-01-10 12:15:43,448 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:15:43,448 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [647998129] [2022-01-10 12:15:43,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:15:43,448 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:15:43,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:15:43,604 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 12:15:43,605 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:15:43,605 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [647998129] [2022-01-10 12:15:43,605 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [647998129] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:15:43,605 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:15:43,605 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 12:15:43,606 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [686255096] [2022-01-10 12:15:43,606 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:15:43,607 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 12:15:43,607 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:15:43,608 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 12:15:43,608 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 12:15:43,608 INFO L87 Difference]: Start difference. First operand 524 states and 883 transitions. Second operand has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:15:43,651 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:15:43,652 INFO L93 Difference]: Finished difference Result 1033 states and 1744 transitions. [2022-01-10 12:15:43,652 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 12:15:43,652 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 68 [2022-01-10 12:15:43,653 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:15:43,656 INFO L225 Difference]: With dead ends: 1033 [2022-01-10 12:15:43,656 INFO L226 Difference]: Without dead ends: 538 [2022-01-10 12:15:43,657 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 12:15:43,657 INFO L933 BasicCegarLoop]: 897 mSDtfsCounter, 862 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 862 SdHoareTripleChecker+Valid, 919 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 12:15:43,658 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [862 Valid, 919 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 12:15:43,658 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 538 states. [2022-01-10 12:15:43,679 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 538 to 524. [2022-01-10 12:15:43,680 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 524 states, 520 states have (on average 1.6961538461538461) internal successors, (882), 523 states have internal predecessors, (882), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:15:43,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 524 states to 524 states and 882 transitions. [2022-01-10 12:15:43,682 INFO L78 Accepts]: Start accepts. Automaton has 524 states and 882 transitions. Word has length 68 [2022-01-10 12:15:43,682 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:15:43,682 INFO L470 AbstractCegarLoop]: Abstraction has 524 states and 882 transitions. [2022-01-10 12:15:43,682 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:15:43,683 INFO L276 IsEmpty]: Start isEmpty. Operand 524 states and 882 transitions. [2022-01-10 12:15:43,683 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-01-10 12:15:43,683 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:15:43,684 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] [2022-01-10 12:15:43,684 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-01-10 12:15:43,684 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-01-10 12:15:43,686 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:15:43,686 INFO L85 PathProgramCache]: Analyzing trace with hash -556095240, now seen corresponding path program 1 times [2022-01-10 12:15:43,687 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:15:43,687 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [914317312] [2022-01-10 12:15:43,687 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:15:43,687 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:15:43,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:15:43,807 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 12:15:43,808 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:15:43,808 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [914317312] [2022-01-10 12:15:43,808 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [914317312] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:15:43,809 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:15:43,809 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 12:15:43,809 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1527952411] [2022-01-10 12:15:43,810 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:15:43,810 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 12:15:43,810 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:15:43,810 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 12:15:43,811 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 12:15:43,811 INFO L87 Difference]: Start difference. First operand 524 states and 882 transitions. Second operand has 5 states, 5 states have (on average 13.8) internal successors, (69), 5 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:15:43,952 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:15:43,953 INFO L93 Difference]: Finished difference Result 1506 states and 2546 transitions. [2022-01-10 12:15:43,953 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 12:15:43,954 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.8) internal successors, (69), 5 states have internal predecessors, (69), 0 states have call successors, (0), 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 69 [2022-01-10 12:15:43,954 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:15:43,957 INFO L225 Difference]: With dead ends: 1506 [2022-01-10 12:15:43,958 INFO L226 Difference]: Without dead ends: 1016 [2022-01-10 12:15:43,959 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 12:15:43,961 INFO L933 BasicCegarLoop]: 891 mSDtfsCounter, 4126 mSDsluCounter, 905 mSDsCounter, 0 mSdLazyCounter, 67 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4126 SdHoareTripleChecker+Valid, 1796 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 12:15:43,961 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4126 Valid, 1796 Invalid, 74 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 67 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 12:15:43,963 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1016 states. [2022-01-10 12:15:44,013 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1016 to 524. [2022-01-10 12:15:44,014 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 524 states, 520 states have (on average 1.6923076923076923) internal successors, (880), 523 states have internal predecessors, (880), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:15:44,017 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 524 states to 524 states and 880 transitions. [2022-01-10 12:15:44,017 INFO L78 Accepts]: Start accepts. Automaton has 524 states and 880 transitions. Word has length 69 [2022-01-10 12:15:44,021 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:15:44,021 INFO L470 AbstractCegarLoop]: Abstraction has 524 states and 880 transitions. [2022-01-10 12:15:44,021 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.8) internal successors, (69), 5 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:15:44,022 INFO L276 IsEmpty]: Start isEmpty. Operand 524 states and 880 transitions. [2022-01-10 12:15:44,023 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2022-01-10 12:15:44,023 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:15:44,023 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] [2022-01-10 12:15:44,024 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-01-10 12:15:44,024 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-01-10 12:15:44,024 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:15:44,024 INFO L85 PathProgramCache]: Analyzing trace with hash -792738155, now seen corresponding path program 1 times [2022-01-10 12:15:44,024 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:15:44,024 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1292316376] [2022-01-10 12:15:44,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:15:44,025 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:15:44,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:15:44,172 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 12:15:44,173 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:15:44,173 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1292316376] [2022-01-10 12:15:44,173 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1292316376] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:15:44,173 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:15:44,173 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-10 12:15:44,173 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [779502821] [2022-01-10 12:15:44,174 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:15:44,175 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-10 12:15:44,175 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:15:44,175 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-10 12:15:44,175 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-01-10 12:15:44,175 INFO L87 Difference]: Start difference. First operand 524 states and 880 transitions. Second operand has 6 states, 6 states have (on average 11.833333333333334) internal successors, (71), 6 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:15:44,546 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:15:44,546 INFO L93 Difference]: Finished difference Result 3350 states and 5552 transitions. [2022-01-10 12:15:44,547 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-01-10 12:15:44,547 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.833333333333334) internal successors, (71), 6 states have internal predecessors, (71), 0 states have call successors, (0), 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 71 [2022-01-10 12:15:44,547 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:15:44,557 INFO L225 Difference]: With dead ends: 3350 [2022-01-10 12:15:44,557 INFO L226 Difference]: Without dead ends: 3104 [2022-01-10 12:15:44,558 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 12:15:44,559 INFO L933 BasicCegarLoop]: 1376 mSDtfsCounter, 5812 mSDsluCounter, 5266 mSDsCounter, 0 mSdLazyCounter, 150 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5812 SdHoareTripleChecker+Valid, 6642 SdHoareTripleChecker+Invalid, 176 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 150 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 12:15:44,559 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5812 Valid, 6642 Invalid, 176 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 150 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 12:15:44,561 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3104 states. [2022-01-10 12:15:44,628 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3104 to 939. [2022-01-10 12:15:44,630 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 939 states, 935 states have (on average 1.695187165775401) internal successors, (1585), 938 states have internal predecessors, (1585), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:15:44,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 939 states to 939 states and 1585 transitions. [2022-01-10 12:15:44,632 INFO L78 Accepts]: Start accepts. Automaton has 939 states and 1585 transitions. Word has length 71 [2022-01-10 12:15:44,632 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:15:44,632 INFO L470 AbstractCegarLoop]: Abstraction has 939 states and 1585 transitions. [2022-01-10 12:15:44,632 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.833333333333334) internal successors, (71), 6 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:15:44,633 INFO L276 IsEmpty]: Start isEmpty. Operand 939 states and 1585 transitions. [2022-01-10 12:15:44,634 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-01-10 12:15:44,634 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:15:44,634 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] [2022-01-10 12:15:44,634 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-01-10 12:15:44,634 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-01-10 12:15:44,634 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:15:44,634 INFO L85 PathProgramCache]: Analyzing trace with hash 1059603128, now seen corresponding path program 1 times [2022-01-10 12:15:44,634 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:15:44,635 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1268907563] [2022-01-10 12:15:44,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:15:44,635 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:15:44,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:15:44,717 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 12:15:44,718 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:15:44,718 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1268907563] [2022-01-10 12:15:44,718 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1268907563] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:15:44,718 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:15:44,718 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 12:15:44,718 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1818382811] [2022-01-10 12:15:44,718 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:15:44,719 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 12:15:44,719 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:15:44,719 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 12:15:44,719 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 12:15:44,719 INFO L87 Difference]: Start difference. First operand 939 states and 1585 transitions. Second operand has 5 states, 5 states have (on average 14.4) internal successors, (72), 5 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:15:44,835 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:15:44,835 INFO L93 Difference]: Finished difference Result 1658 states and 2747 transitions. [2022-01-10 12:15:44,835 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 12:15:44,836 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.4) internal successors, (72), 5 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 72 [2022-01-10 12:15:44,836 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:15:44,839 INFO L225 Difference]: With dead ends: 1658 [2022-01-10 12:15:44,839 INFO L226 Difference]: Without dead ends: 1247 [2022-01-10 12:15:44,840 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 12:15:44,841 INFO L933 BasicCegarLoop]: 866 mSDtfsCounter, 2310 mSDsluCounter, 1215 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2310 SdHoareTripleChecker+Valid, 2081 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 12:15:44,841 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2310 Valid, 2081 Invalid, 48 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 12:15:44,842 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1247 states. [2022-01-10 12:15:44,886 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1247 to 939. [2022-01-10 12:15:44,887 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 939 states, 935 states have (on average 1.690909090909091) internal successors, (1581), 938 states have internal predecessors, (1581), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:15:44,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 939 states to 939 states and 1581 transitions. [2022-01-10 12:15:44,889 INFO L78 Accepts]: Start accepts. Automaton has 939 states and 1581 transitions. Word has length 72 [2022-01-10 12:15:44,889 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:15:44,889 INFO L470 AbstractCegarLoop]: Abstraction has 939 states and 1581 transitions. [2022-01-10 12:15:44,890 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.4) internal successors, (72), 5 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:15:44,890 INFO L276 IsEmpty]: Start isEmpty. Operand 939 states and 1581 transitions. [2022-01-10 12:15:44,891 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-01-10 12:15:44,891 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:15:44,891 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 12:15:44,891 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-01-10 12:15:44,891 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-01-10 12:15:44,891 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:15:44,891 INFO L85 PathProgramCache]: Analyzing trace with hash 1458708419, now seen corresponding path program 1 times [2022-01-10 12:15:44,892 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:15:44,892 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [152497856] [2022-01-10 12:15:44,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:15:44,892 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:15:44,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:15:44,950 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 12:15:44,950 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:15:44,950 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [152497856] [2022-01-10 12:15:44,951 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [152497856] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:15:44,951 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:15:44,951 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 12:15:44,951 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [865558824] [2022-01-10 12:15:44,951 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:15:44,951 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 12:15:44,951 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:15:44,952 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 12:15:44,952 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 12:15:44,952 INFO L87 Difference]: Start difference. First operand 939 states and 1581 transitions. Second operand has 5 states, 5 states have (on average 14.4) internal successors, (72), 5 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:15:45,128 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:15:45,128 INFO L93 Difference]: Finished difference Result 2694 states and 4572 transitions. [2022-01-10 12:15:45,129 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 12:15:45,129 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.4) internal successors, (72), 5 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 72 [2022-01-10 12:15:45,129 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:15:45,134 INFO L225 Difference]: With dead ends: 2694 [2022-01-10 12:15:45,134 INFO L226 Difference]: Without dead ends: 1792 [2022-01-10 12:15:45,135 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 12:15:45,136 INFO L933 BasicCegarLoop]: 1659 mSDtfsCounter, 2571 mSDsluCounter, 831 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2571 SdHoareTripleChecker+Valid, 2490 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 12:15:45,136 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2571 Valid, 2490 Invalid, 69 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 62 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 12:15:45,137 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1792 states. [2022-01-10 12:15:45,185 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1792 to 939. [2022-01-10 12:15:45,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 939 states, 935 states have (on average 1.6887700534759358) internal successors, (1579), 938 states have internal predecessors, (1579), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:15:45,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 939 states to 939 states and 1579 transitions. [2022-01-10 12:15:45,189 INFO L78 Accepts]: Start accepts. Automaton has 939 states and 1579 transitions. Word has length 72 [2022-01-10 12:15:45,189 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:15:45,189 INFO L470 AbstractCegarLoop]: Abstraction has 939 states and 1579 transitions. [2022-01-10 12:15:45,189 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.4) internal successors, (72), 5 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:15:45,189 INFO L276 IsEmpty]: Start isEmpty. Operand 939 states and 1579 transitions. [2022-01-10 12:15:45,190 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2022-01-10 12:15:45,190 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:15:45,190 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 12:15:45,191 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-01-10 12:15:45,191 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-01-10 12:15:45,191 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:15:45,191 INFO L85 PathProgramCache]: Analyzing trace with hash 1100236897, now seen corresponding path program 1 times [2022-01-10 12:15:45,191 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:15:45,191 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [690834144] [2022-01-10 12:15:45,191 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:15:45,192 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:15:45,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:15:45,292 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 12:15:45,293 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:15:45,293 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [690834144] [2022-01-10 12:15:45,293 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [690834144] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:15:45,293 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:15:45,293 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-10 12:15:45,293 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1321107624] [2022-01-10 12:15:45,293 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:15:45,294 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-01-10 12:15:45,294 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:15:45,294 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-01-10 12:15:45,294 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2022-01-10 12:15:45,294 INFO L87 Difference]: Start difference. First operand 939 states and 1579 transitions. Second operand has 9 states, 9 states have (on average 8.11111111111111) internal successors, (73), 8 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:15:45,997 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:15:45,998 INFO L93 Difference]: Finished difference Result 4018 states and 6485 transitions. [2022-01-10 12:15:45,998 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-01-10 12:15:45,998 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 8.11111111111111) internal successors, (73), 8 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 73 [2022-01-10 12:15:45,998 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:15:46,009 INFO L225 Difference]: With dead ends: 4018 [2022-01-10 12:15:46,009 INFO L226 Difference]: Without dead ends: 3649 [2022-01-10 12:15:46,010 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 12:15:46,011 INFO L933 BasicCegarLoop]: 1087 mSDtfsCounter, 8285 mSDsluCounter, 6326 mSDsCounter, 0 mSdLazyCounter, 356 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8285 SdHoareTripleChecker+Valid, 7413 SdHoareTripleChecker+Invalid, 380 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 356 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-10 12:15:46,011 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [8285 Valid, 7413 Invalid, 380 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 356 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-10 12:15:46,013 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3649 states. [2022-01-10 12:15:46,164 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3649 to 1738. [2022-01-10 12:15:46,167 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1738 states, 1734 states have (on average 1.7018454440599768) internal successors, (2951), 1737 states have internal predecessors, (2951), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:15:46,172 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1738 states to 1738 states and 2951 transitions. [2022-01-10 12:15:46,172 INFO L78 Accepts]: Start accepts. Automaton has 1738 states and 2951 transitions. Word has length 73 [2022-01-10 12:15:46,172 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:15:46,172 INFO L470 AbstractCegarLoop]: Abstraction has 1738 states and 2951 transitions. [2022-01-10 12:15:46,172 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.11111111111111) internal successors, (73), 8 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:15:46,172 INFO L276 IsEmpty]: Start isEmpty. Operand 1738 states and 2951 transitions. [2022-01-10 12:15:46,174 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-01-10 12:15:46,174 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:15:46,174 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] [2022-01-10 12:15:46,174 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-01-10 12:15:46,174 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-01-10 12:15:46,175 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:15:46,175 INFO L85 PathProgramCache]: Analyzing trace with hash 1068219935, now seen corresponding path program 1 times [2022-01-10 12:15:46,175 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:15:46,175 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1621677762] [2022-01-10 12:15:46,175 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:15:46,175 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:15:46,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:15:46,275 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 12:15:46,275 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:15:46,275 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1621677762] [2022-01-10 12:15:46,275 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1621677762] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:15:46,275 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:15:46,275 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-10 12:15:46,276 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2030294414] [2022-01-10 12:15:46,276 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:15:46,276 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-01-10 12:15:46,276 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:15:46,276 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-01-10 12:15:46,276 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2022-01-10 12:15:46,276 INFO L87 Difference]: Start difference. First operand 1738 states and 2951 transitions. Second operand has 9 states, 9 states have (on average 8.222222222222221) internal successors, (74), 8 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:15:47,218 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:15:47,219 INFO L93 Difference]: Finished difference Result 6678 states and 10855 transitions. [2022-01-10 12:15:47,219 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-01-10 12:15:47,219 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 8.222222222222221) internal successors, (74), 8 states have internal predecessors, (74), 0 states have call successors, (0), 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 74 [2022-01-10 12:15:47,219 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:15:47,236 INFO L225 Difference]: With dead ends: 6678 [2022-01-10 12:15:47,237 INFO L226 Difference]: Without dead ends: 6024 [2022-01-10 12:15:47,239 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 12:15:47,239 INFO L933 BasicCegarLoop]: 947 mSDtfsCounter, 6717 mSDsluCounter, 6423 mSDsCounter, 0 mSdLazyCounter, 374 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6717 SdHoareTripleChecker+Valid, 7370 SdHoareTripleChecker+Invalid, 397 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 374 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-10 12:15:47,239 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6717 Valid, 7370 Invalid, 397 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 374 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-10 12:15:47,243 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6024 states. [2022-01-10 12:15:47,463 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6024 to 3341. [2022-01-10 12:15:47,468 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3341 states, 3337 states have (on average 1.7090200779142943) internal successors, (5703), 3340 states have internal predecessors, (5703), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:15:47,476 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3341 states to 3341 states and 5703 transitions. [2022-01-10 12:15:47,476 INFO L78 Accepts]: Start accepts. Automaton has 3341 states and 5703 transitions. Word has length 74 [2022-01-10 12:15:47,476 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:15:47,476 INFO L470 AbstractCegarLoop]: Abstraction has 3341 states and 5703 transitions. [2022-01-10 12:15:47,476 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.222222222222221) internal successors, (74), 8 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:15:47,477 INFO L276 IsEmpty]: Start isEmpty. Operand 3341 states and 5703 transitions. [2022-01-10 12:15:47,480 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-01-10 12:15:47,480 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:15:47,480 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] [2022-01-10 12:15:47,480 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-01-10 12:15:47,480 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-01-10 12:15:47,481 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:15:47,481 INFO L85 PathProgramCache]: Analyzing trace with hash -1008989408, now seen corresponding path program 1 times [2022-01-10 12:15:47,481 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:15:47,481 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1484241854] [2022-01-10 12:15:47,481 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:15:47,481 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:15:47,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:15:47,565 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 12:15:47,566 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:15:47,566 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1484241854] [2022-01-10 12:15:47,566 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1484241854] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:15:47,566 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:15:47,566 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 12:15:47,566 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1701684935] [2022-01-10 12:15:47,566 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:15:47,566 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 12:15:47,567 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:15:47,567 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 12:15:47,567 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 12:15:47,567 INFO L87 Difference]: Start difference. First operand 3341 states and 5703 transitions. Second operand has 5 states, 5 states have (on average 14.8) internal successors, (74), 4 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:15:48,404 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:15:48,404 INFO L93 Difference]: Finished difference Result 9509 states and 15407 transitions. [2022-01-10 12:15:48,404 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-01-10 12:15:48,405 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.8) internal successors, (74), 4 states have internal predecessors, (74), 0 states have call successors, (0), 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 74 [2022-01-10 12:15:48,405 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:15:48,427 INFO L225 Difference]: With dead ends: 9509 [2022-01-10 12:15:48,427 INFO L226 Difference]: Without dead ends: 8600 [2022-01-10 12:15:48,430 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 12:15:48,430 INFO L933 BasicCegarLoop]: 881 mSDtfsCounter, 2686 mSDsluCounter, 2720 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2686 SdHoareTripleChecker+Valid, 3601 SdHoareTripleChecker+Invalid, 63 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 12:15:48,431 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2686 Valid, 3601 Invalid, 63 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 12:15:48,436 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8600 states. [2022-01-10 12:15:48,812 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8600 to 5129. [2022-01-10 12:15:48,820 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5129 states, 5125 states have (on average 1.68) internal successors, (8610), 5128 states have internal predecessors, (8610), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:15:48,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5129 states to 5129 states and 8610 transitions. [2022-01-10 12:15:48,828 INFO L78 Accepts]: Start accepts. Automaton has 5129 states and 8610 transitions. Word has length 74 [2022-01-10 12:15:48,829 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:15:48,829 INFO L470 AbstractCegarLoop]: Abstraction has 5129 states and 8610 transitions. [2022-01-10 12:15:48,829 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.8) internal successors, (74), 4 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:15:48,829 INFO L276 IsEmpty]: Start isEmpty. Operand 5129 states and 8610 transitions. [2022-01-10 12:15:48,833 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2022-01-10 12:15:48,833 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:15:48,833 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] [2022-01-10 12:15:48,833 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-01-10 12:15:48,834 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-01-10 12:15:48,834 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:15:48,834 INFO L85 PathProgramCache]: Analyzing trace with hash -282285521, now seen corresponding path program 1 times [2022-01-10 12:15:48,834 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:15:48,834 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [41654632] [2022-01-10 12:15:48,834 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:15:48,834 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:15:48,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:15:49,009 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 12:15:49,009 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:15:49,009 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [41654632] [2022-01-10 12:15:49,010 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [41654632] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:15:49,010 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:15:49,010 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-10 12:15:49,010 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1570628747] [2022-01-10 12:15:49,010 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:15:49,010 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-10 12:15:49,011 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:15:49,011 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-10 12:15:49,011 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-01-10 12:15:49,011 INFO L87 Difference]: Start difference. First operand 5129 states and 8610 transitions. Second operand has 8 states, 8 states have (on average 9.375) internal successors, (75), 8 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:15:49,734 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:15:49,735 INFO L93 Difference]: Finished difference Result 7968 states and 13048 transitions. [2022-01-10 12:15:49,735 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-01-10 12:15:49,735 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 9.375) internal successors, (75), 8 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 75 [2022-01-10 12:15:49,735 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:15:49,750 INFO L225 Difference]: With dead ends: 7968 [2022-01-10 12:15:49,750 INFO L226 Difference]: Without dead ends: 5865 [2022-01-10 12:15:49,755 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=101, Invalid=205, Unknown=0, NotChecked=0, Total=306 [2022-01-10 12:15:49,756 INFO L933 BasicCegarLoop]: 948 mSDtfsCounter, 2561 mSDsluCounter, 3741 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2561 SdHoareTripleChecker+Valid, 4689 SdHoareTripleChecker+Invalid, 51 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 12:15:49,757 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2561 Valid, 4689 Invalid, 51 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 12:15:49,762 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5865 states. [2022-01-10 12:15:50,144 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5865 to 4729. [2022-01-10 12:15:50,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4729 states, 4725 states have (on average 1.6732275132275132) internal successors, (7906), 4728 states have internal predecessors, (7906), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:15:50,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4729 states to 4729 states and 7906 transitions. [2022-01-10 12:15:50,163 INFO L78 Accepts]: Start accepts. Automaton has 4729 states and 7906 transitions. Word has length 75 [2022-01-10 12:15:50,163 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:15:50,163 INFO L470 AbstractCegarLoop]: Abstraction has 4729 states and 7906 transitions. [2022-01-10 12:15:50,163 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.375) internal successors, (75), 8 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:15:50,163 INFO L276 IsEmpty]: Start isEmpty. Operand 4729 states and 7906 transitions. [2022-01-10 12:15:50,168 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2022-01-10 12:15:50,168 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:15:50,168 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 12:15:50,169 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-01-10 12:15:50,169 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-01-10 12:15:50,169 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:15:50,169 INFO L85 PathProgramCache]: Analyzing trace with hash 1864620987, now seen corresponding path program 1 times [2022-01-10 12:15:50,169 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:15:50,169 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1230522987] [2022-01-10 12:15:50,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:15:50,170 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:15:50,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:15:50,300 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 12:15:50,300 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:15:50,301 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1230522987] [2022-01-10 12:15:50,301 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1230522987] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:15:50,301 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:15:50,301 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-10 12:15:50,301 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2133721350] [2022-01-10 12:15:50,301 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:15:50,301 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-10 12:15:50,301 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:15:50,302 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-10 12:15:50,302 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2022-01-10 12:15:50,302 INFO L87 Difference]: Start difference. First operand 4729 states and 7906 transitions. Second operand has 8 states, 8 states have (on average 9.5) internal successors, (76), 8 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:15:53,572 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:15:53,572 INFO L93 Difference]: Finished difference Result 24837 states and 39510 transitions. [2022-01-10 12:15:53,573 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2022-01-10 12:15:53,573 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 9.5) internal successors, (76), 8 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 76 [2022-01-10 12:15:53,573 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:15:53,619 INFO L225 Difference]: With dead ends: 24837 [2022-01-10 12:15:53,619 INFO L226 Difference]: Without dead ends: 23318 [2022-01-10 12:15:53,630 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 173 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=218, Invalid=538, Unknown=0, NotChecked=0, Total=756 [2022-01-10 12:15:53,630 INFO L933 BasicCegarLoop]: 2382 mSDtfsCounter, 3622 mSDsluCounter, 9931 mSDsCounter, 0 mSdLazyCounter, 346 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3622 SdHoareTripleChecker+Valid, 12313 SdHoareTripleChecker+Invalid, 377 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 346 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-10 12:15:53,631 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3622 Valid, 12313 Invalid, 377 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 346 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-10 12:15:53,651 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23318 states. [2022-01-10 12:15:54,382 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23318 to 6228. [2022-01-10 12:15:54,393 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6228 states, 6224 states have (on average 1.6563303341902313) internal successors, (10309), 6227 states have internal predecessors, (10309), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:15:54,404 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6228 states to 6228 states and 10309 transitions. [2022-01-10 12:15:54,404 INFO L78 Accepts]: Start accepts. Automaton has 6228 states and 10309 transitions. Word has length 76 [2022-01-10 12:15:54,404 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:15:54,405 INFO L470 AbstractCegarLoop]: Abstraction has 6228 states and 10309 transitions. [2022-01-10 12:15:54,405 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.5) internal successors, (76), 8 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:15:54,405 INFO L276 IsEmpty]: Start isEmpty. Operand 6228 states and 10309 transitions. [2022-01-10 12:15:54,411 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-01-10 12:15:54,411 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:15:54,411 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 12:15:54,411 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-01-10 12:15:54,411 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-01-10 12:15:54,412 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:15:54,412 INFO L85 PathProgramCache]: Analyzing trace with hash 1265045516, now seen corresponding path program 1 times [2022-01-10 12:15:54,412 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:15:54,412 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [400497652] [2022-01-10 12:15:54,412 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:15:54,412 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:15:54,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:15:54,511 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 12:15:54,511 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:15:54,512 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [400497652] [2022-01-10 12:15:54,512 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [400497652] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:15:54,512 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:15:54,512 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-10 12:15:54,512 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2106408828] [2022-01-10 12:15:54,512 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:15:54,512 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-10 12:15:54,512 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:15:54,513 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-10 12:15:54,513 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-01-10 12:15:54,513 INFO L87 Difference]: Start difference. First operand 6228 states and 10309 transitions. Second operand has 6 states, 6 states have (on average 12.833333333333334) internal successors, (77), 6 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:15:58,435 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:15:58,435 INFO L93 Difference]: Finished difference Result 34194 states and 56019 transitions. [2022-01-10 12:15:58,435 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-01-10 12:15:58,436 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 12.833333333333334) internal successors, (77), 6 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2022-01-10 12:15:58,436 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:15:58,498 INFO L225 Difference]: With dead ends: 34194 [2022-01-10 12:15:58,498 INFO L226 Difference]: Without dead ends: 31842 [2022-01-10 12:15:58,512 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 12:15:58,513 INFO L933 BasicCegarLoop]: 1322 mSDtfsCounter, 4496 mSDsluCounter, 4025 mSDsCounter, 0 mSdLazyCounter, 115 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4496 SdHoareTripleChecker+Valid, 5347 SdHoareTripleChecker+Invalid, 139 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 115 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 12:15:58,514 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4496 Valid, 5347 Invalid, 139 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 115 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 12:15:58,541 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31842 states. [2022-01-10 12:15:59,940 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31842 to 12417. [2022-01-10 12:15:59,956 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12417 states, 12413 states have (on average 1.6547973898332393) internal successors, (20541), 12416 states have internal predecessors, (20541), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:15:59,977 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12417 states to 12417 states and 20541 transitions. [2022-01-10 12:15:59,977 INFO L78 Accepts]: Start accepts. Automaton has 12417 states and 20541 transitions. Word has length 77 [2022-01-10 12:15:59,977 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:15:59,977 INFO L470 AbstractCegarLoop]: Abstraction has 12417 states and 20541 transitions. [2022-01-10 12:15:59,978 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.833333333333334) internal successors, (77), 6 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:15:59,978 INFO L276 IsEmpty]: Start isEmpty. Operand 12417 states and 20541 transitions. [2022-01-10 12:15:59,990 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2022-01-10 12:15:59,991 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:15:59,991 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] [2022-01-10 12:15:59,991 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-01-10 12:15:59,991 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-01-10 12:15:59,991 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:15:59,992 INFO L85 PathProgramCache]: Analyzing trace with hash 374405975, now seen corresponding path program 1 times [2022-01-10 12:15:59,992 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:15:59,992 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2045169270] [2022-01-10 12:15:59,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:15:59,992 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:16:00,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:16:00,098 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 12:16:00,098 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:16:00,098 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2045169270] [2022-01-10 12:16:00,098 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2045169270] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:16:00,098 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:16:00,098 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-10 12:16:00,098 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [336045812] [2022-01-10 12:16:00,098 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:16:00,099 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-10 12:16:00,099 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:16:00,099 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-10 12:16:00,099 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-01-10 12:16:00,099 INFO L87 Difference]: Start difference. First operand 12417 states and 20541 transitions. Second operand has 8 states, 8 states have (on average 9.75) internal successors, (78), 8 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:16:05,426 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:16:05,426 INFO L93 Difference]: Finished difference Result 39707 states and 62890 transitions. [2022-01-10 12:16:05,426 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-01-10 12:16:05,427 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 9.75) internal successors, (78), 8 states have internal predecessors, (78), 0 states have call successors, (0), 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 78 [2022-01-10 12:16:05,427 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:16:05,487 INFO L225 Difference]: With dead ends: 39707 [2022-01-10 12:16:05,487 INFO L226 Difference]: Without dead ends: 33688 [2022-01-10 12:16:05,502 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=139, Invalid=281, Unknown=0, NotChecked=0, Total=420 [2022-01-10 12:16:05,503 INFO L933 BasicCegarLoop]: 910 mSDtfsCounter, 8304 mSDsluCounter, 3434 mSDsCounter, 0 mSdLazyCounter, 141 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8304 SdHoareTripleChecker+Valid, 4344 SdHoareTripleChecker+Invalid, 192 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 141 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 12:16:05,503 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [8304 Valid, 4344 Invalid, 192 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [51 Valid, 141 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 12:16:05,525 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33688 states. [2022-01-10 12:16:07,488 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33688 to 13260. [2022-01-10 12:16:07,508 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13260 states, 13256 states have (on average 1.6431804465902233) internal successors, (21782), 13259 states have internal predecessors, (21782), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:16:07,528 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13260 states to 13260 states and 21782 transitions. [2022-01-10 12:16:07,528 INFO L78 Accepts]: Start accepts. Automaton has 13260 states and 21782 transitions. Word has length 78 [2022-01-10 12:16:07,528 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:16:07,528 INFO L470 AbstractCegarLoop]: Abstraction has 13260 states and 21782 transitions. [2022-01-10 12:16:07,528 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.75) internal successors, (78), 8 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:16:07,528 INFO L276 IsEmpty]: Start isEmpty. Operand 13260 states and 21782 transitions. [2022-01-10 12:16:07,539 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2022-01-10 12:16:07,539 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:16:07,539 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] [2022-01-10 12:16:07,540 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-01-10 12:16:07,540 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-01-10 12:16:07,540 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:16:07,540 INFO L85 PathProgramCache]: Analyzing trace with hash 503488694, now seen corresponding path program 1 times [2022-01-10 12:16:07,540 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:16:07,540 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [605473206] [2022-01-10 12:16:07,540 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:16:07,540 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:16:07,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:16:07,662 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 12:16:07,662 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:16:07,662 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [605473206] [2022-01-10 12:16:07,664 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [605473206] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:16:07,664 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:16:07,664 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-01-10 12:16:07,664 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [718022162] [2022-01-10 12:16:07,664 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:16:07,665 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-01-10 12:16:07,665 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:16:07,665 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-01-10 12:16:07,665 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2022-01-10 12:16:07,665 INFO L87 Difference]: Start difference. First operand 13260 states and 21782 transitions. Second operand has 10 states, 10 states have (on average 7.8) internal successors, (78), 10 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:16:16,831 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:16:16,832 INFO L93 Difference]: Finished difference Result 51466 states and 79942 transitions. [2022-01-10 12:16:16,832 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2022-01-10 12:16:16,837 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 7.8) internal successors, (78), 10 states have internal predecessors, (78), 0 states have call successors, (0), 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 78 [2022-01-10 12:16:16,852 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:16:16,948 INFO L225 Difference]: With dead ends: 51466 [2022-01-10 12:16:16,948 INFO L226 Difference]: Without dead ends: 48868 [2022-01-10 12:16:16,963 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 508 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=501, Invalid=1391, Unknown=0, NotChecked=0, Total=1892 [2022-01-10 12:16:16,964 INFO L933 BasicCegarLoop]: 1266 mSDtfsCounter, 7597 mSDsluCounter, 8588 mSDsCounter, 0 mSdLazyCounter, 288 mSolverCounterSat, 58 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7597 SdHoareTripleChecker+Valid, 9854 SdHoareTripleChecker+Invalid, 346 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 58 IncrementalHoareTripleChecker+Valid, 288 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-10 12:16:16,964 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [7597 Valid, 9854 Invalid, 346 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [58 Valid, 288 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-10 12:16:17,005 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48868 states. [2022-01-10 12:16:19,498 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48868 to 16382. [2022-01-10 12:16:19,513 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16382 states, 16378 states have (on average 1.6357919159848577) internal successors, (26791), 16381 states have internal predecessors, (26791), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:16:19,540 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16382 states to 16382 states and 26791 transitions. [2022-01-10 12:16:19,540 INFO L78 Accepts]: Start accepts. Automaton has 16382 states and 26791 transitions. Word has length 78 [2022-01-10 12:16:19,540 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:16:19,540 INFO L470 AbstractCegarLoop]: Abstraction has 16382 states and 26791 transitions. [2022-01-10 12:16:19,540 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.8) internal successors, (78), 10 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:16:19,541 INFO L276 IsEmpty]: Start isEmpty. Operand 16382 states and 26791 transitions. [2022-01-10 12:16:19,552 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2022-01-10 12:16:19,552 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:16:19,552 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] [2022-01-10 12:16:19,552 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-01-10 12:16:19,553 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-01-10 12:16:19,553 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:16:19,553 INFO L85 PathProgramCache]: Analyzing trace with hash 1612043026, now seen corresponding path program 1 times [2022-01-10 12:16:19,553 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:16:19,553 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1477697754] [2022-01-10 12:16:19,553 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:16:19,553 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:16:19,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:16:19,613 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 12:16:19,613 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:16:19,613 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1477697754] [2022-01-10 12:16:19,613 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1477697754] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:16:19,613 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:16:19,613 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 12:16:19,614 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1274408827] [2022-01-10 12:16:19,614 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:16:19,614 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 12:16:19,614 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:16:19,614 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 12:16:19,614 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 12:16:19,614 INFO L87 Difference]: Start difference. First operand 16382 states and 26791 transitions. Second operand has 4 states, 4 states have (on average 19.5) internal successors, (78), 4 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:16:22,577 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:16:22,578 INFO L93 Difference]: Finished difference Result 21372 states and 34338 transitions. [2022-01-10 12:16:22,578 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 12:16:22,578 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 19.5) internal successors, (78), 4 states have internal predecessors, (78), 0 states have call successors, (0), 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 78 [2022-01-10 12:16:22,579 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:16:22,604 INFO L225 Difference]: With dead ends: 21372 [2022-01-10 12:16:22,605 INFO L226 Difference]: Without dead ends: 18394 [2022-01-10 12:16:22,611 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 12:16:22,612 INFO L933 BasicCegarLoop]: 868 mSDtfsCounter, 1011 mSDsluCounter, 1072 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1011 SdHoareTripleChecker+Valid, 1940 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 12:16:22,612 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1011 Valid, 1940 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 12:16:22,624 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18394 states. [2022-01-10 12:16:24,841 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18394 to 16382. [2022-01-10 12:16:24,861 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16382 states, 16378 states have (on average 1.6355476859201368) internal successors, (26787), 16381 states have internal predecessors, (26787), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:16:24,886 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16382 states to 16382 states and 26787 transitions. [2022-01-10 12:16:24,886 INFO L78 Accepts]: Start accepts. Automaton has 16382 states and 26787 transitions. Word has length 78 [2022-01-10 12:16:24,887 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:16:24,887 INFO L470 AbstractCegarLoop]: Abstraction has 16382 states and 26787 transitions. [2022-01-10 12:16:24,887 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.5) internal successors, (78), 4 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:16:24,887 INFO L276 IsEmpty]: Start isEmpty. Operand 16382 states and 26787 transitions. [2022-01-10 12:16:24,898 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2022-01-10 12:16:24,898 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:16:24,898 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] [2022-01-10 12:16:24,898 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-01-10 12:16:24,899 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-01-10 12:16:24,900 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:16:24,900 INFO L85 PathProgramCache]: Analyzing trace with hash -323617261, now seen corresponding path program 1 times [2022-01-10 12:16:24,900 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:16:24,900 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1169544745] [2022-01-10 12:16:24,900 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:16:24,900 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:16:24,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:16:25,006 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 12:16:25,006 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:16:25,006 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1169544745] [2022-01-10 12:16:25,007 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1169544745] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:16:25,007 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:16:25,007 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-01-10 12:16:25,007 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2131752597] [2022-01-10 12:16:25,007 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:16:25,007 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-01-10 12:16:25,007 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:16:25,007 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-01-10 12:16:25,008 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2022-01-10 12:16:25,008 INFO L87 Difference]: Start difference. First operand 16382 states and 26787 transitions. Second operand has 10 states, 10 states have (on average 7.8) internal successors, (78), 9 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:16:40,632 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:16:40,632 INFO L93 Difference]: Finished difference Result 78491 states and 123057 transitions. [2022-01-10 12:16:40,632 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2022-01-10 12:16:40,633 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 7.8) internal successors, (78), 9 states have internal predecessors, (78), 0 states have call successors, (0), 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 78 [2022-01-10 12:16:40,633 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:16:40,774 INFO L225 Difference]: With dead ends: 78491 [2022-01-10 12:16:40,774 INFO L226 Difference]: Without dead ends: 74871 [2022-01-10 12:16:40,799 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 214 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=337, Invalid=785, Unknown=0, NotChecked=0, Total=1122 [2022-01-10 12:16:40,799 INFO L933 BasicCegarLoop]: 1242 mSDtfsCounter, 12727 mSDsluCounter, 9039 mSDsCounter, 0 mSdLazyCounter, 610 mSolverCounterSat, 75 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12727 SdHoareTripleChecker+Valid, 10281 SdHoareTripleChecker+Invalid, 685 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 75 IncrementalHoareTripleChecker+Valid, 610 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-01-10 12:16:40,799 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [12727 Valid, 10281 Invalid, 685 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [75 Valid, 610 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-01-10 12:16:40,856 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74871 states. [2022-01-10 12:16:46,845 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74871 to 32818. [2022-01-10 12:16:46,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32818 states, 32814 states have (on average 1.618089839702566) internal successors, (53096), 32817 states have internal predecessors, (53096), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:16:46,923 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32818 states to 32818 states and 53096 transitions. [2022-01-10 12:16:46,923 INFO L78 Accepts]: Start accepts. Automaton has 32818 states and 53096 transitions. Word has length 78 [2022-01-10 12:16:46,923 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:16:46,924 INFO L470 AbstractCegarLoop]: Abstraction has 32818 states and 53096 transitions. [2022-01-10 12:16:46,924 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.8) internal successors, (78), 9 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:16:46,924 INFO L276 IsEmpty]: Start isEmpty. Operand 32818 states and 53096 transitions. [2022-01-10 12:16:46,945 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-10 12:16:46,945 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:16:46,945 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 12:16:46,945 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-01-10 12:16:46,946 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-01-10 12:16:46,946 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:16:46,946 INFO L85 PathProgramCache]: Analyzing trace with hash -1541161847, now seen corresponding path program 1 times [2022-01-10 12:16:46,946 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:16:46,946 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [655259386] [2022-01-10 12:16:46,946 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:16:46,946 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:16:46,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:16:47,052 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 12:16:47,052 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:16:47,053 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [655259386] [2022-01-10 12:16:47,053 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [655259386] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:16:47,053 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:16:47,053 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-01-10 12:16:47,053 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [264288386] [2022-01-10 12:16:47,053 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:16:47,053 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-01-10 12:16:47,053 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:16:47,053 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-01-10 12:16:47,054 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2022-01-10 12:16:47,054 INFO L87 Difference]: Start difference. First operand 32818 states and 53096 transitions. Second operand has 10 states, 10 states have (on average 7.9) internal successors, (79), 9 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)