/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -tc ../../../trunk/examples/toolchains/AutomizerC.xml -i ../sv-benchmarks/c/seq-mthreaded/pals_lcr.8.ufo.UNBOUNDED.pals.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-f954360 [2023-04-02 05:22:30,626 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-04-02 05:22:30,627 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-04-02 05:22:30,650 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-04-02 05:22:30,651 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-04-02 05:22:30,651 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-04-02 05:22:30,652 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-04-02 05:22:30,655 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-04-02 05:22:30,656 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-04-02 05:22:30,657 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-04-02 05:22:30,658 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-04-02 05:22:30,660 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-04-02 05:22:30,661 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-04-02 05:22:30,668 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-04-02 05:22:30,670 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-04-02 05:22:30,670 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-04-02 05:22:30,671 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-04-02 05:22:30,672 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-04-02 05:22:30,674 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-04-02 05:22:30,679 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-04-02 05:22:30,680 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-04-02 05:22:30,682 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-04-02 05:22:30,683 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-04-02 05:22:30,683 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-04-02 05:22:30,685 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-04-02 05:22:30,685 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-04-02 05:22:30,685 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-04-02 05:22:30,686 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-04-02 05:22:30,686 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-04-02 05:22:30,686 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-04-02 05:22:30,687 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-04-02 05:22:30,687 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-04-02 05:22:30,687 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-04-02 05:22:30,688 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-04-02 05:22:30,688 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-04-02 05:22:30,688 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-04-02 05:22:30,689 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-04-02 05:22:30,689 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-04-02 05:22:30,689 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-04-02 05:22:30,690 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-04-02 05:22:30,690 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-04-02 05:22:30,696 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2023-04-02 05:22:30,712 INFO L113 SettingsManager]: Loading preferences was successful [2023-04-02 05:22:30,713 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-04-02 05:22:30,713 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-04-02 05:22:30,713 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-04-02 05:22:30,714 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-04-02 05:22:30,715 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-04-02 05:22:30,715 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-04-02 05:22:30,715 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-04-02 05:22:30,715 INFO L138 SettingsManager]: * Use SBE=true [2023-04-02 05:22:30,715 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-04-02 05:22:30,716 INFO L138 SettingsManager]: * sizeof long=4 [2023-04-02 05:22:30,716 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-04-02 05:22:30,716 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-04-02 05:22:30,716 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-04-02 05:22:30,716 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-04-02 05:22:30,716 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-04-02 05:22:30,716 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-04-02 05:22:30,716 INFO L138 SettingsManager]: * sizeof long double=12 [2023-04-02 05:22:30,717 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-04-02 05:22:30,717 INFO L138 SettingsManager]: * Use constant arrays=true [2023-04-02 05:22:30,717 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-04-02 05:22:30,717 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-04-02 05:22:30,717 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-04-02 05:22:30,717 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-04-02 05:22:30,717 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-02 05:22:30,717 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-04-02 05:22:30,717 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-04-02 05:22:30,717 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-04-02 05:22:30,717 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-04-02 05:22:30,717 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-04-02 05:22:30,718 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-04-02 05:22:30,718 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-04-02 05:22:30,718 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-04-02 05:22:30,718 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-04-02 05:22:30,718 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-04-02 05:22:30,718 INFO L138 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-04-02 05:22:30,919 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-04-02 05:22:30,940 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-04-02 05:22:30,942 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-04-02 05:22:30,943 INFO L271 PluginConnector]: Initializing CDTParser... [2023-04-02 05:22:30,943 INFO L275 PluginConnector]: CDTParser initialized [2023-04-02 05:22:30,944 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/seq-mthreaded/pals_lcr.8.ufo.UNBOUNDED.pals.c [2023-04-02 05:22:31,998 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-04-02 05:22:32,176 INFO L351 CDTParser]: Found 1 translation units. [2023-04-02 05:22:32,176 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded/pals_lcr.8.ufo.UNBOUNDED.pals.c [2023-04-02 05:22:32,194 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a7be7a820/d72f90a6d03444f9acf5e9c4aeea1006/FLAG39e0ea47b [2023-04-02 05:22:32,204 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a7be7a820/d72f90a6d03444f9acf5e9c4aeea1006 [2023-04-02 05:22:32,206 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-04-02 05:22:32,207 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2023-04-02 05:22:32,208 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-04-02 05:22:32,208 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-04-02 05:22:32,216 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-04-02 05:22:32,216 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.04 05:22:32" (1/1) ... [2023-04-02 05:22:32,217 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@42e15cbf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 05:22:32, skipping insertion in model container [2023-04-02 05:22:32,217 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.04 05:22:32" (1/1) ... [2023-04-02 05:22:32,222 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-04-02 05:22:32,249 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-04-02 05:22:32,415 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded/pals_lcr.8.ufo.UNBOUNDED.pals.c[26481,26494] [2023-04-02 05:22:32,418 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-02 05:22:32,430 INFO L203 MainTranslator]: Completed pre-run [2023-04-02 05:22:32,508 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded/pals_lcr.8.ufo.UNBOUNDED.pals.c[26481,26494] [2023-04-02 05:22:32,508 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-02 05:22:32,522 INFO L208 MainTranslator]: Completed translation [2023-04-02 05:22:32,522 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 05:22:32 WrapperNode [2023-04-02 05:22:32,522 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-04-02 05:22:32,523 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-04-02 05:22:32,523 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-04-02 05:22:32,524 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-04-02 05:22:32,533 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 05:22:32" (1/1) ... [2023-04-02 05:22:32,533 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 05:22:32" (1/1) ... [2023-04-02 05:22:32,542 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 05:22:32" (1/1) ... [2023-04-02 05:22:32,543 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 05:22:32" (1/1) ... [2023-04-02 05:22:32,558 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 05:22:32" (1/1) ... [2023-04-02 05:22:32,566 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 05:22:32" (1/1) ... [2023-04-02 05:22:32,574 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 05:22:32" (1/1) ... [2023-04-02 05:22:32,576 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 05:22:32" (1/1) ... [2023-04-02 05:22:32,579 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-04-02 05:22:32,580 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-04-02 05:22:32,580 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-04-02 05:22:32,580 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-04-02 05:22:32,581 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 05:22:32" (1/1) ... [2023-04-02 05:22:32,601 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-02 05:22:32,610 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-02 05:22:32,627 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-04-02 05:22:32,646 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 [2023-04-02 05:22:32,658 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2023-04-02 05:22:32,659 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-04-02 05:22:32,661 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2023-04-02 05:22:32,661 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-04-02 05:22:32,661 INFO L138 BoogieDeclarations]: Found implementation of procedure node1 [2023-04-02 05:22:32,661 INFO L138 BoogieDeclarations]: Found implementation of procedure node2 [2023-04-02 05:22:32,661 INFO L138 BoogieDeclarations]: Found implementation of procedure node3 [2023-04-02 05:22:32,661 INFO L138 BoogieDeclarations]: Found implementation of procedure node4 [2023-04-02 05:22:32,661 INFO L138 BoogieDeclarations]: Found implementation of procedure node5 [2023-04-02 05:22:32,661 INFO L138 BoogieDeclarations]: Found implementation of procedure node6 [2023-04-02 05:22:32,661 INFO L138 BoogieDeclarations]: Found implementation of procedure node7 [2023-04-02 05:22:32,662 INFO L138 BoogieDeclarations]: Found implementation of procedure node8 [2023-04-02 05:22:32,662 INFO L138 BoogieDeclarations]: Found implementation of procedure init [2023-04-02 05:22:32,662 INFO L138 BoogieDeclarations]: Found implementation of procedure check [2023-04-02 05:22:32,662 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2023-04-02 05:22:32,662 INFO L138 BoogieDeclarations]: Found implementation of procedure assert [2023-04-02 05:22:32,662 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2023-04-02 05:22:32,662 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2023-04-02 05:22:32,662 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2023-04-02 05:22:32,662 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-04-02 05:22:32,662 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2023-04-02 05:22:32,662 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2023-04-02 05:22:32,663 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uchar [2023-04-02 05:22:32,663 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2023-04-02 05:22:32,663 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-04-02 05:22:32,663 INFO L130 BoogieDeclarations]: Found specification of procedure read [2023-04-02 05:22:32,663 INFO L130 BoogieDeclarations]: Found specification of procedure write [2023-04-02 05:22:32,663 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2023-04-02 05:22:32,663 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2023-04-02 05:22:32,663 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2023-04-02 05:22:32,663 INFO L130 BoogieDeclarations]: Found specification of procedure node4 [2023-04-02 05:22:32,663 INFO L130 BoogieDeclarations]: Found specification of procedure node5 [2023-04-02 05:22:32,663 INFO L130 BoogieDeclarations]: Found specification of procedure node6 [2023-04-02 05:22:32,663 INFO L130 BoogieDeclarations]: Found specification of procedure node7 [2023-04-02 05:22:32,663 INFO L130 BoogieDeclarations]: Found specification of procedure node8 [2023-04-02 05:22:32,663 INFO L130 BoogieDeclarations]: Found specification of procedure init [2023-04-02 05:22:32,664 INFO L130 BoogieDeclarations]: Found specification of procedure check [2023-04-02 05:22:32,664 INFO L130 BoogieDeclarations]: Found specification of procedure main [2023-04-02 05:22:32,664 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2023-04-02 05:22:32,664 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-04-02 05:22:32,664 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-04-02 05:22:32,664 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-04-02 05:22:32,664 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-04-02 05:22:32,664 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-04-02 05:22:32,773 INFO L236 CfgBuilder]: Building ICFG [2023-04-02 05:22:32,775 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-04-02 05:22:33,270 INFO L277 CfgBuilder]: Performing block encoding [2023-04-02 05:22:33,276 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-04-02 05:22:33,276 INFO L302 CfgBuilder]: Removed 1 assume(true) statements. [2023-04-02 05:22:33,278 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.04 05:22:33 BoogieIcfgContainer [2023-04-02 05:22:33,278 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-04-02 05:22:33,279 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-04-02 05:22:33,279 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-04-02 05:22:33,282 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-04-02 05:22:33,282 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.04 05:22:32" (1/3) ... [2023-04-02 05:22:33,282 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@48138d55 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.04 05:22:33, skipping insertion in model container [2023-04-02 05:22:33,282 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 05:22:32" (2/3) ... [2023-04-02 05:22:33,282 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@48138d55 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.04 05:22:33, skipping insertion in model container [2023-04-02 05:22:33,283 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.04 05:22:33" (3/3) ... [2023-04-02 05:22:33,283 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_lcr.8.ufo.UNBOUNDED.pals.c [2023-04-02 05:22:33,303 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-04-02 05:22:33,303 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-04-02 05:22:33,338 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-04-02 05:22:33,345 INFO L357 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, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@107162ce, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-04-02 05:22:33,345 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-04-02 05:22:33,350 INFO L276 IsEmpty]: Start isEmpty. Operand has 178 states, 148 states have (on average 1.7027027027027026) internal successors, (252), 150 states have internal predecessors, (252), 14 states have call successors, (14), 14 states have call predecessors, (14), 14 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) [2023-04-02 05:22:33,363 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2023-04-02 05:22:33,363 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 05:22:33,364 INFO L195 NwaCegarLoop]: 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] [2023-04-02 05:22:33,365 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 05:22:33,369 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 05:22:33,369 INFO L85 PathProgramCache]: Analyzing trace with hash -2039276795, now seen corresponding path program 1 times [2023-04-02 05:22:33,375 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 05:22:33,376 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [872687985] [2023-04-02 05:22:33,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 05:22:33,376 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 05:22:33,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:22:33,885 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 05:22:33,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:22:33,926 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-04-02 05:22:33,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:22:33,933 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-04-02 05:22:33,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:22:33,956 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-04-02 05:22:33,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:22:33,973 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-04-02 05:22:33,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:22:33,993 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2023-04-02 05:22:33,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:22:34,017 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-04-02 05:22:34,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:22:34,042 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2023-04-02 05:22:34,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:22:34,068 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2023-04-02 05:22:34,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:22:34,092 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-04-02 05:22:34,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:22:34,119 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2023-04-02 05:22:34,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:22:34,129 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2023-04-02 05:22:34,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:22:34,141 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 05:22:34,141 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 05:22:34,141 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [872687985] [2023-04-02 05:22:34,142 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [872687985] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 05:22:34,142 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 05:22:34,142 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-04-02 05:22:34,143 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [802808650] [2023-04-02 05:22:34,144 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 05:22:34,148 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-04-02 05:22:34,148 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 05:22:34,179 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-04-02 05:22:34,180 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2023-04-02 05:22:34,183 INFO L87 Difference]: Start difference. First operand has 178 states, 148 states have (on average 1.7027027027027026) internal successors, (252), 150 states have internal predecessors, (252), 14 states have call successors, (14), 14 states have call predecessors, (14), 14 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) Second operand has 11 states, 11 states have (on average 4.181818181818182) internal successors, (46), 2 states have internal predecessors, (46), 2 states have call successors, (14), 11 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2023-04-02 05:22:35,499 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 05:22:35,499 INFO L93 Difference]: Finished difference Result 276 states and 420 transitions. [2023-04-02 05:22:35,500 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-04-02 05:22:35,501 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 4.181818181818182) internal successors, (46), 2 states have internal predecessors, (46), 2 states have call successors, (14), 11 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 72 [2023-04-02 05:22:35,502 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 05:22:35,513 INFO L225 Difference]: With dead ends: 276 [2023-04-02 05:22:35,513 INFO L226 Difference]: Without dead ends: 174 [2023-04-02 05:22:35,519 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=107, Invalid=235, Unknown=0, NotChecked=0, Total=342 [2023-04-02 05:22:35,522 INFO L413 NwaCegarLoop]: 33 mSDtfsCounter, 1971 mSDsluCounter, 40 mSDsCounter, 0 mSdLazyCounter, 450 mSolverCounterSat, 117 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1971 SdHoareTripleChecker+Valid, 73 SdHoareTripleChecker+Invalid, 567 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 117 IncrementalHoareTripleChecker+Valid, 450 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-04-02 05:22:35,523 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1971 Valid, 73 Invalid, 567 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [117 Valid, 450 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-04-02 05:22:35,536 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 174 states. [2023-04-02 05:22:35,586 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 174 to 173. [2023-04-02 05:22:35,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 173 states, 145 states have (on average 1.6896551724137931) internal successors, (245), 146 states have internal predecessors, (245), 14 states have call successors, (14), 14 states have call predecessors, (14), 13 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2023-04-02 05:22:35,590 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 173 states to 173 states and 272 transitions. [2023-04-02 05:22:35,591 INFO L78 Accepts]: Start accepts. Automaton has 173 states and 272 transitions. Word has length 72 [2023-04-02 05:22:35,594 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 05:22:35,598 INFO L495 AbstractCegarLoop]: Abstraction has 173 states and 272 transitions. [2023-04-02 05:22:35,599 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 4.181818181818182) internal successors, (46), 2 states have internal predecessors, (46), 2 states have call successors, (14), 11 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2023-04-02 05:22:35,599 INFO L276 IsEmpty]: Start isEmpty. Operand 173 states and 272 transitions. [2023-04-02 05:22:35,604 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2023-04-02 05:22:35,605 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 05:22:35,605 INFO L195 NwaCegarLoop]: 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] [2023-04-02 05:22:35,605 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-04-02 05:22:35,605 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 05:22:35,607 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 05:22:35,608 INFO L85 PathProgramCache]: Analyzing trace with hash -778359545, now seen corresponding path program 1 times [2023-04-02 05:22:35,608 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 05:22:35,608 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1408198039] [2023-04-02 05:22:35,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 05:22:35,608 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 05:22:35,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:22:35,994 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 05:22:36,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:22:36,011 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-04-02 05:22:36,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:22:36,049 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-04-02 05:22:36,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:22:36,087 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-04-02 05:22:36,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:22:36,105 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-04-02 05:22:36,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:22:36,124 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2023-04-02 05:22:36,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:22:36,145 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-04-02 05:22:36,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:22:36,166 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2023-04-02 05:22:36,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:22:36,186 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2023-04-02 05:22:36,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:22:36,207 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-04-02 05:22:36,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:22:36,228 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2023-04-02 05:22:36,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:22:36,233 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2023-04-02 05:22:36,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:22:36,236 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 05:22:36,237 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 05:22:36,237 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1408198039] [2023-04-02 05:22:36,237 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1408198039] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 05:22:36,237 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 05:22:36,237 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2023-04-02 05:22:36,237 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1891901999] [2023-04-02 05:22:36,237 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 05:22:36,239 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-04-02 05:22:36,239 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 05:22:36,240 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-04-02 05:22:36,240 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=233, Unknown=0, NotChecked=0, Total=272 [2023-04-02 05:22:36,240 INFO L87 Difference]: Start difference. First operand 173 states and 272 transitions. Second operand has 17 states, 16 states have (on average 2.875) internal successors, (46), 7 states have internal predecessors, (46), 3 states have call successors, (14), 11 states have call predecessors, (14), 3 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2023-04-02 05:22:38,580 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 05:22:38,581 INFO L93 Difference]: Finished difference Result 274 states and 412 transitions. [2023-04-02 05:22:38,581 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-04-02 05:22:38,581 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 16 states have (on average 2.875) internal successors, (46), 7 states have internal predecessors, (46), 3 states have call successors, (14), 11 states have call predecessors, (14), 3 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) Word has length 72 [2023-04-02 05:22:38,582 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 05:22:38,583 INFO L225 Difference]: With dead ends: 274 [2023-04-02 05:22:38,583 INFO L226 Difference]: Without dead ends: 174 [2023-04-02 05:22:38,584 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 96 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=203, Invalid=609, Unknown=0, NotChecked=0, Total=812 [2023-04-02 05:22:38,584 INFO L413 NwaCegarLoop]: 31 mSDtfsCounter, 732 mSDsluCounter, 144 mSDsCounter, 0 mSdLazyCounter, 2009 mSolverCounterSat, 75 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 742 SdHoareTripleChecker+Valid, 175 SdHoareTripleChecker+Invalid, 2084 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 75 IncrementalHoareTripleChecker+Valid, 2009 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-04-02 05:22:38,585 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [742 Valid, 175 Invalid, 2084 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [75 Valid, 2009 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-04-02 05:22:38,585 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 174 states. [2023-04-02 05:22:38,617 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 174 to 173. [2023-04-02 05:22:38,617 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 173 states, 145 states have (on average 1.2689655172413794) internal successors, (184), 146 states have internal predecessors, (184), 14 states have call successors, (14), 14 states have call predecessors, (14), 13 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2023-04-02 05:22:38,618 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 173 states to 173 states and 211 transitions. [2023-04-02 05:22:38,618 INFO L78 Accepts]: Start accepts. Automaton has 173 states and 211 transitions. Word has length 72 [2023-04-02 05:22:38,619 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 05:22:38,619 INFO L495 AbstractCegarLoop]: Abstraction has 173 states and 211 transitions. [2023-04-02 05:22:38,619 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 16 states have (on average 2.875) internal successors, (46), 7 states have internal predecessors, (46), 3 states have call successors, (14), 11 states have call predecessors, (14), 3 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2023-04-02 05:22:38,619 INFO L276 IsEmpty]: Start isEmpty. Operand 173 states and 211 transitions. [2023-04-02 05:22:38,621 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2023-04-02 05:22:38,621 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 05:22:38,621 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 05:22:38,622 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-04-02 05:22:38,622 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 05:22:38,622 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 05:22:38,622 INFO L85 PathProgramCache]: Analyzing trace with hash 1520267927, now seen corresponding path program 1 times [2023-04-02 05:22:38,622 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 05:22:38,622 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1301142527] [2023-04-02 05:22:38,623 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 05:22:38,623 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 05:22:38,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:22:39,261 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 05:22:39,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:22:39,272 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-04-02 05:22:39,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:22:39,387 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2023-04-02 05:22:39,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:22:39,404 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-04-02 05:22:39,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:22:39,440 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2023-04-02 05:22:39,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:22:39,484 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2023-04-02 05:22:39,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:22:39,518 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2023-04-02 05:22:39,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:22:39,553 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2023-04-02 05:22:39,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:22:39,614 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2023-04-02 05:22:39,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:22:39,654 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2023-04-02 05:22:39,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:22:39,699 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2023-04-02 05:22:39,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:22:39,722 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2023-04-02 05:22:39,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:22:39,745 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 05:22:39,745 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 05:22:39,746 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1301142527] [2023-04-02 05:22:39,746 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1301142527] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 05:22:39,747 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 05:22:39,747 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [28] imperfect sequences [] total 28 [2023-04-02 05:22:39,747 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1965638151] [2023-04-02 05:22:39,747 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 05:22:39,748 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2023-04-02 05:22:39,748 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 05:22:39,749 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2023-04-02 05:22:39,749 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=679, Unknown=0, NotChecked=0, Total=756 [2023-04-02 05:22:39,749 INFO L87 Difference]: Start difference. First operand 173 states and 211 transitions. Second operand has 28 states, 28 states have (on average 3.7857142857142856) internal successors, (106), 19 states have internal predecessors, (106), 3 states have call successors, (14), 11 states have call predecessors, (14), 11 states have return successors, (12), 3 states have call predecessors, (12), 2 states have call successors, (12) [2023-04-02 05:23:11,875 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 05:23:11,876 INFO L93 Difference]: Finished difference Result 2532 states and 3645 transitions. [2023-04-02 05:23:11,876 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 278 states. [2023-04-02 05:23:11,876 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 3.7857142857142856) internal successors, (106), 19 states have internal predecessors, (106), 3 states have call successors, (14), 11 states have call predecessors, (14), 11 states have return successors, (12), 3 states have call predecessors, (12), 2 states have call successors, (12) Word has length 132 [2023-04-02 05:23:11,877 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 05:23:11,887 INFO L225 Difference]: With dead ends: 2532 [2023-04-02 05:23:11,887 INFO L226 Difference]: Without dead ends: 2438 [2023-04-02 05:23:11,904 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 340 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 298 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36607 ImplicationChecksByTransitivity, 24.8s TimeCoverageRelationStatistics Valid=10864, Invalid=78836, Unknown=0, NotChecked=0, Total=89700 [2023-04-02 05:23:11,905 INFO L413 NwaCegarLoop]: 87 mSDtfsCounter, 11076 mSDsluCounter, 353 mSDsCounter, 0 mSdLazyCounter, 8687 mSolverCounterSat, 1219 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11095 SdHoareTripleChecker+Valid, 440 SdHoareTripleChecker+Invalid, 9906 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1219 IncrementalHoareTripleChecker+Valid, 8687 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.7s IncrementalHoareTripleChecker+Time [2023-04-02 05:23:11,905 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11095 Valid, 440 Invalid, 9906 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1219 Valid, 8687 Invalid, 0 Unknown, 0 Unchecked, 6.7s Time] [2023-04-02 05:23:11,908 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2438 states. [2023-04-02 05:23:12,079 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2438 to 673. [2023-04-02 05:23:12,081 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 673 states, 529 states have (on average 1.4158790170132325) internal successors, (749), 546 states have internal predecessors, (749), 64 states have call successors, (64), 64 states have call predecessors, (64), 79 states have return successors, (115), 63 states have call predecessors, (115), 63 states have call successors, (115) [2023-04-02 05:23:12,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 673 states to 673 states and 928 transitions. [2023-04-02 05:23:12,084 INFO L78 Accepts]: Start accepts. Automaton has 673 states and 928 transitions. Word has length 132 [2023-04-02 05:23:12,085 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 05:23:12,085 INFO L495 AbstractCegarLoop]: Abstraction has 673 states and 928 transitions. [2023-04-02 05:23:12,085 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 3.7857142857142856) internal successors, (106), 19 states have internal predecessors, (106), 3 states have call successors, (14), 11 states have call predecessors, (14), 11 states have return successors, (12), 3 states have call predecessors, (12), 2 states have call successors, (12) [2023-04-02 05:23:12,085 INFO L276 IsEmpty]: Start isEmpty. Operand 673 states and 928 transitions. [2023-04-02 05:23:12,087 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2023-04-02 05:23:12,087 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 05:23:12,087 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 05:23:12,087 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-04-02 05:23:12,088 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 05:23:12,088 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 05:23:12,088 INFO L85 PathProgramCache]: Analyzing trace with hash -553570137, now seen corresponding path program 1 times [2023-04-02 05:23:12,088 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 05:23:12,088 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [372428499] [2023-04-02 05:23:12,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 05:23:12,089 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 05:23:12,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:23:12,297 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 05:23:12,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:23:12,309 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-04-02 05:23:12,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:23:12,318 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2023-04-02 05:23:12,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:23:12,329 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-04-02 05:23:12,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:23:12,342 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2023-04-02 05:23:12,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:23:12,355 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2023-04-02 05:23:12,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:23:12,369 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2023-04-02 05:23:12,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:23:12,400 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2023-04-02 05:23:12,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:23:12,418 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2023-04-02 05:23:12,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:23:12,435 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2023-04-02 05:23:12,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:23:12,454 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2023-04-02 05:23:12,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:23:12,458 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2023-04-02 05:23:12,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:23:12,474 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 05:23:12,474 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 05:23:12,474 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [372428499] [2023-04-02 05:23:12,474 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [372428499] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 05:23:12,474 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 05:23:12,475 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2023-04-02 05:23:12,475 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [29341596] [2023-04-02 05:23:12,475 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 05:23:12,475 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-04-02 05:23:12,475 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 05:23:12,476 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-04-02 05:23:12,476 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2023-04-02 05:23:12,476 INFO L87 Difference]: Start difference. First operand 673 states and 928 transitions. Second operand has 12 states, 12 states have (on average 9.0) internal successors, (108), 3 states have internal predecessors, (108), 2 states have call successors, (14), 11 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 1 states have call successors, (12) [2023-04-02 05:23:14,723 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 05:23:14,723 INFO L93 Difference]: Finished difference Result 1827 states and 2588 transitions. [2023-04-02 05:23:14,730 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-04-02 05:23:14,730 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 9.0) internal successors, (108), 3 states have internal predecessors, (108), 2 states have call successors, (14), 11 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 1 states have call successors, (12) Word has length 134 [2023-04-02 05:23:14,731 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 05:23:14,748 INFO L225 Difference]: With dead ends: 1827 [2023-04-02 05:23:14,748 INFO L226 Difference]: Without dead ends: 1233 [2023-04-02 05:23:14,750 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 128 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=225, Invalid=587, Unknown=0, NotChecked=0, Total=812 [2023-04-02 05:23:14,750 INFO L413 NwaCegarLoop]: 48 mSDtfsCounter, 1539 mSDsluCounter, 77 mSDsCounter, 0 mSdLazyCounter, 853 mSolverCounterSat, 113 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1547 SdHoareTripleChecker+Valid, 125 SdHoareTripleChecker+Invalid, 966 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 113 IncrementalHoareTripleChecker+Valid, 853 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-04-02 05:23:14,751 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1547 Valid, 125 Invalid, 966 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [113 Valid, 853 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-04-02 05:23:14,765 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1233 states. [2023-04-02 05:23:15,000 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1233 to 1213. [2023-04-02 05:23:15,005 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1213 states, 935 states have (on average 1.427807486631016) internal successors, (1335), 966 states have internal predecessors, (1335), 124 states have call successors, (124), 124 states have call predecessors, (124), 153 states have return successors, (237), 123 states have call predecessors, (237), 123 states have call successors, (237) [2023-04-02 05:23:15,016 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1213 states to 1213 states and 1696 transitions. [2023-04-02 05:23:15,016 INFO L78 Accepts]: Start accepts. Automaton has 1213 states and 1696 transitions. Word has length 134 [2023-04-02 05:23:15,017 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 05:23:15,017 INFO L495 AbstractCegarLoop]: Abstraction has 1213 states and 1696 transitions. [2023-04-02 05:23:15,017 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.0) internal successors, (108), 3 states have internal predecessors, (108), 2 states have call successors, (14), 11 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 1 states have call successors, (12) [2023-04-02 05:23:15,017 INFO L276 IsEmpty]: Start isEmpty. Operand 1213 states and 1696 transitions. [2023-04-02 05:23:15,020 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2023-04-02 05:23:15,021 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 05:23:15,021 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 05:23:15,021 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-04-02 05:23:15,022 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 05:23:15,022 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 05:23:15,022 INFO L85 PathProgramCache]: Analyzing trace with hash -1841272593, now seen corresponding path program 1 times [2023-04-02 05:23:15,022 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 05:23:15,022 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [494006915] [2023-04-02 05:23:15,022 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 05:23:15,022 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 05:23:15,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:23:15,696 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 05:23:15,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:23:15,725 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-04-02 05:23:15,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:23:15,880 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2023-04-02 05:23:15,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:23:15,898 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-04-02 05:23:15,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:23:15,942 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2023-04-02 05:23:15,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:23:16,000 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2023-04-02 05:23:16,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:23:16,063 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2023-04-02 05:23:16,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:23:16,097 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2023-04-02 05:23:16,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:23:16,133 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2023-04-02 05:23:16,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:23:16,173 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2023-04-02 05:23:16,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:23:16,222 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2023-04-02 05:23:16,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:23:16,247 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2023-04-02 05:23:16,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:23:16,268 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 05:23:16,268 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 05:23:16,268 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [494006915] [2023-04-02 05:23:16,268 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [494006915] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 05:23:16,268 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 05:23:16,268 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [28] imperfect sequences [] total 28 [2023-04-02 05:23:16,269 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [784358728] [2023-04-02 05:23:16,270 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 05:23:16,270 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2023-04-02 05:23:16,270 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 05:23:16,272 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2023-04-02 05:23:16,274 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=679, Unknown=0, NotChecked=0, Total=756 [2023-04-02 05:23:16,275 INFO L87 Difference]: Start difference. First operand 1213 states and 1696 transitions. Second operand has 28 states, 28 states have (on average 3.857142857142857) internal successors, (108), 19 states have internal predecessors, (108), 3 states have call successors, (14), 11 states have call predecessors, (14), 11 states have return successors, (12), 3 states have call predecessors, (12), 2 states have call successors, (12) [2023-04-02 05:23:51,386 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 05:23:51,387 INFO L93 Difference]: Finished difference Result 6914 states and 10019 transitions. [2023-04-02 05:23:51,387 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 275 states. [2023-04-02 05:23:51,387 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 3.857142857142857) internal successors, (108), 19 states have internal predecessors, (108), 3 states have call successors, (14), 11 states have call predecessors, (14), 11 states have return successors, (12), 3 states have call predecessors, (12), 2 states have call successors, (12) Word has length 134 [2023-04-02 05:23:51,388 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 05:23:51,411 INFO L225 Difference]: With dead ends: 6914 [2023-04-02 05:23:51,411 INFO L226 Difference]: Without dead ends: 5780 [2023-04-02 05:23:51,421 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 336 GetRequests, 40 SyntacticMatches, 1 SemanticMatches, 295 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36247 ImplicationChecksByTransitivity, 27.6s TimeCoverageRelationStatistics Valid=10701, Invalid=77211, Unknown=0, NotChecked=0, Total=87912 [2023-04-02 05:23:51,422 INFO L413 NwaCegarLoop]: 90 mSDtfsCounter, 11282 mSDsluCounter, 359 mSDsCounter, 0 mSdLazyCounter, 8083 mSolverCounterSat, 1257 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11301 SdHoareTripleChecker+Valid, 449 SdHoareTripleChecker+Invalid, 9340 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1257 IncrementalHoareTripleChecker+Valid, 8083 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.2s IncrementalHoareTripleChecker+Time [2023-04-02 05:23:51,422 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11301 Valid, 449 Invalid, 9340 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1257 Valid, 8083 Invalid, 0 Unknown, 0 Unchecked, 6.2s Time] [2023-04-02 05:23:51,427 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5780 states. [2023-04-02 05:23:52,497 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5780 to 5638. [2023-04-02 05:23:52,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5638 states, 4333 states have (on average 1.473805677359797) internal successors, (6386), 4419 states have internal predecessors, (6386), 610 states have call successors, (610), 610 states have call predecessors, (610), 694 states have return successors, (1210), 609 states have call predecessors, (1210), 609 states have call successors, (1210) [2023-04-02 05:23:52,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5638 states to 5638 states and 8206 transitions. [2023-04-02 05:23:52,522 INFO L78 Accepts]: Start accepts. Automaton has 5638 states and 8206 transitions. Word has length 134 [2023-04-02 05:23:52,523 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 05:23:52,523 INFO L495 AbstractCegarLoop]: Abstraction has 5638 states and 8206 transitions. [2023-04-02 05:23:52,524 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 3.857142857142857) internal successors, (108), 19 states have internal predecessors, (108), 3 states have call successors, (14), 11 states have call predecessors, (14), 11 states have return successors, (12), 3 states have call predecessors, (12), 2 states have call successors, (12) [2023-04-02 05:23:52,524 INFO L276 IsEmpty]: Start isEmpty. Operand 5638 states and 8206 transitions. [2023-04-02 05:23:52,527 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2023-04-02 05:23:52,528 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 05:23:52,528 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 05:23:52,528 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-04-02 05:23:52,528 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 05:23:52,528 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 05:23:52,528 INFO L85 PathProgramCache]: Analyzing trace with hash 776852276, now seen corresponding path program 1 times [2023-04-02 05:23:52,528 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 05:23:52,528 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [642811028] [2023-04-02 05:23:52,529 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 05:23:52,529 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 05:23:52,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:23:52,906 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 05:23:52,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:23:52,915 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-04-02 05:23:52,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:23:52,939 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2023-04-02 05:23:52,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:23:52,953 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-04-02 05:23:52,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:23:52,981 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2023-04-02 05:23:52,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:23:52,995 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2023-04-02 05:23:52,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:23:53,012 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2023-04-02 05:23:53,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:23:53,027 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2023-04-02 05:23:53,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:23:53,044 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2023-04-02 05:23:53,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:23:53,062 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2023-04-02 05:23:53,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:23:53,083 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2023-04-02 05:23:53,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:23:53,088 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2023-04-02 05:23:53,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:23:53,102 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 05:23:53,102 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 05:23:53,102 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [642811028] [2023-04-02 05:23:53,103 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [642811028] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 05:23:53,103 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 05:23:53,103 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2023-04-02 05:23:53,103 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1659615313] [2023-04-02 05:23:53,103 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 05:23:53,103 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-04-02 05:23:53,103 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 05:23:53,104 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-04-02 05:23:53,104 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2023-04-02 05:23:53,104 INFO L87 Difference]: Start difference. First operand 5638 states and 8206 transitions. Second operand has 14 states, 14 states have (on average 7.785714285714286) internal successors, (109), 5 states have internal predecessors, (109), 3 states have call successors, (14), 11 states have call predecessors, (14), 4 states have return successors, (12), 3 states have call predecessors, (12), 2 states have call successors, (12) [2023-04-02 05:23:57,681 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 05:23:57,681 INFO L93 Difference]: Finished difference Result 13454 states and 19668 transitions. [2023-04-02 05:23:57,693 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2023-04-02 05:23:57,693 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 7.785714285714286) internal successors, (109), 5 states have internal predecessors, (109), 3 states have call successors, (14), 11 states have call predecessors, (14), 4 states have return successors, (12), 3 states have call predecessors, (12), 2 states have call successors, (12) Word has length 135 [2023-04-02 05:23:57,693 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 05:23:57,718 INFO L225 Difference]: With dead ends: 13454 [2023-04-02 05:23:57,718 INFO L226 Difference]: Without dead ends: 7895 [2023-04-02 05:23:57,728 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 359 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=388, Invalid=1252, Unknown=0, NotChecked=0, Total=1640 [2023-04-02 05:23:57,729 INFO L413 NwaCegarLoop]: 36 mSDtfsCounter, 2514 mSDsluCounter, 84 mSDsCounter, 0 mSdLazyCounter, 1133 mSolverCounterSat, 206 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2524 SdHoareTripleChecker+Valid, 120 SdHoareTripleChecker+Invalid, 1339 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 206 IncrementalHoareTripleChecker+Valid, 1133 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-04-02 05:23:57,729 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2524 Valid, 120 Invalid, 1339 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [206 Valid, 1133 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-04-02 05:23:57,735 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7895 states. [2023-04-02 05:23:59,308 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7895 to 7791. [2023-04-02 05:23:59,322 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7791 states, 5960 states have (on average 1.4674496644295303) internal successors, (8746), 6098 states have internal predecessors, (8746), 847 states have call successors, (847), 847 states have call predecessors, (847), 983 states have return successors, (1700), 846 states have call predecessors, (1700), 846 states have call successors, (1700) [2023-04-02 05:23:59,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7791 states to 7791 states and 11293 transitions. [2023-04-02 05:23:59,344 INFO L78 Accepts]: Start accepts. Automaton has 7791 states and 11293 transitions. Word has length 135 [2023-04-02 05:23:59,344 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 05:23:59,344 INFO L495 AbstractCegarLoop]: Abstraction has 7791 states and 11293 transitions. [2023-04-02 05:23:59,345 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 7.785714285714286) internal successors, (109), 5 states have internal predecessors, (109), 3 states have call successors, (14), 11 states have call predecessors, (14), 4 states have return successors, (12), 3 states have call predecessors, (12), 2 states have call successors, (12) [2023-04-02 05:23:59,345 INFO L276 IsEmpty]: Start isEmpty. Operand 7791 states and 11293 transitions. [2023-04-02 05:23:59,349 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2023-04-02 05:23:59,349 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 05:23:59,349 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 05:23:59,349 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-04-02 05:23:59,349 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 05:23:59,350 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 05:23:59,350 INFO L85 PathProgramCache]: Analyzing trace with hash -1870690059, now seen corresponding path program 1 times [2023-04-02 05:23:59,350 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 05:23:59,350 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1453093002] [2023-04-02 05:23:59,350 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 05:23:59,350 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 05:23:59,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:23:59,826 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 05:23:59,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:23:59,840 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-04-02 05:23:59,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:23:59,932 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2023-04-02 05:23:59,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:23:59,948 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-04-02 05:23:59,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:23:59,972 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2023-04-02 05:23:59,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:23:59,989 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2023-04-02 05:23:59,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:24:00,007 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2023-04-02 05:24:00,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:24:00,027 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2023-04-02 05:24:00,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:24:00,045 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2023-04-02 05:24:00,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:24:00,066 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2023-04-02 05:24:00,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:24:00,087 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2023-04-02 05:24:00,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:24:00,090 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2023-04-02 05:24:00,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:24:00,126 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 05:24:00,127 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 05:24:00,127 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1453093002] [2023-04-02 05:24:00,127 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1453093002] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 05:24:00,127 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 05:24:00,127 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2023-04-02 05:24:00,127 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [815445710] [2023-04-02 05:24:00,127 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 05:24:00,127 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2023-04-02 05:24:00,127 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 05:24:00,128 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2023-04-02 05:24:00,128 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=373, Unknown=0, NotChecked=0, Total=420 [2023-04-02 05:24:00,128 INFO L87 Difference]: Start difference. First operand 7791 states and 11293 transitions. Second operand has 21 states, 19 states have (on average 5.7368421052631575) internal successors, (109), 9 states have internal predecessors, (109), 3 states have call successors, (14), 11 states have call predecessors, (14), 3 states have return successors, (12), 3 states have call predecessors, (12), 2 states have call successors, (12) [2023-04-02 05:24:04,271 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 05:24:04,271 INFO L93 Difference]: Finished difference Result 8374 states and 12630 transitions. [2023-04-02 05:24:04,271 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2023-04-02 05:24:04,271 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 19 states have (on average 5.7368421052631575) internal successors, (109), 9 states have internal predecessors, (109), 3 states have call successors, (14), 11 states have call predecessors, (14), 3 states have return successors, (12), 3 states have call predecessors, (12), 2 states have call successors, (12) Word has length 135 [2023-04-02 05:24:04,272 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 05:24:04,311 INFO L225 Difference]: With dead ends: 8374 [2023-04-02 05:24:04,311 INFO L226 Difference]: Without dead ends: 8372 [2023-04-02 05:24:04,314 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 102 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=257, Invalid=1003, Unknown=0, NotChecked=0, Total=1260 [2023-04-02 05:24:04,316 INFO L413 NwaCegarLoop]: 52 mSDtfsCounter, 1185 mSDsluCounter, 325 mSDsCounter, 0 mSdLazyCounter, 2564 mSolverCounterSat, 80 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1196 SdHoareTripleChecker+Valid, 377 SdHoareTripleChecker+Invalid, 2644 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 80 IncrementalHoareTripleChecker+Valid, 2564 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-04-02 05:24:04,316 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1196 Valid, 377 Invalid, 2644 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [80 Valid, 2564 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-04-02 05:24:04,323 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8372 states. [2023-04-02 05:24:05,877 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8372 to 7863. [2023-04-02 05:24:05,887 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7863 states, 6008 states have (on average 1.4612183754993342) internal successors, (8779), 6154 states have internal predecessors, (8779), 855 states have call successors, (855), 855 states have call predecessors, (855), 999 states have return successors, (1724), 854 states have call predecessors, (1724), 854 states have call successors, (1724) [2023-04-02 05:24:05,903 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7863 states to 7863 states and 11358 transitions. [2023-04-02 05:24:05,904 INFO L78 Accepts]: Start accepts. Automaton has 7863 states and 11358 transitions. Word has length 135 [2023-04-02 05:24:05,904 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 05:24:05,904 INFO L495 AbstractCegarLoop]: Abstraction has 7863 states and 11358 transitions. [2023-04-02 05:24:05,904 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 19 states have (on average 5.7368421052631575) internal successors, (109), 9 states have internal predecessors, (109), 3 states have call successors, (14), 11 states have call predecessors, (14), 3 states have return successors, (12), 3 states have call predecessors, (12), 2 states have call successors, (12) [2023-04-02 05:24:05,904 INFO L276 IsEmpty]: Start isEmpty. Operand 7863 states and 11358 transitions. [2023-04-02 05:24:05,907 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2023-04-02 05:24:05,907 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 05:24:05,908 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 05:24:05,908 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-04-02 05:24:05,908 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 05:24:05,908 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 05:24:05,908 INFO L85 PathProgramCache]: Analyzing trace with hash 1865947999, now seen corresponding path program 1 times [2023-04-02 05:24:05,908 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 05:24:05,908 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [473073827] [2023-04-02 05:24:05,908 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 05:24:05,908 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 05:24:05,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:24:06,173 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 05:24:06,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:24:06,192 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-04-02 05:24:06,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:24:06,215 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2023-04-02 05:24:06,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:24:06,228 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-04-02 05:24:06,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:24:06,241 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2023-04-02 05:24:06,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:24:06,256 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2023-04-02 05:24:06,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:24:06,308 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2023-04-02 05:24:06,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:24:06,328 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2023-04-02 05:24:06,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:24:06,348 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2023-04-02 05:24:06,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:24:06,370 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2023-04-02 05:24:06,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:24:06,396 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2023-04-02 05:24:06,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:24:06,401 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2023-04-02 05:24:06,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:24:06,404 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 05:24:06,404 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 05:24:06,404 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [473073827] [2023-04-02 05:24:06,404 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [473073827] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 05:24:06,404 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 05:24:06,404 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2023-04-02 05:24:06,404 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1162347797] [2023-04-02 05:24:06,404 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 05:24:06,405 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-04-02 05:24:06,405 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 05:24:06,406 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-04-02 05:24:06,406 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=263, Unknown=0, NotChecked=0, Total=306 [2023-04-02 05:24:06,406 INFO L87 Difference]: Start difference. First operand 7863 states and 11358 transitions. Second operand has 18 states, 18 states have (on average 6.111111111111111) internal successors, (110), 9 states have internal predecessors, (110), 5 states have call successors, (14), 12 states have call predecessors, (14), 4 states have return successors, (12), 4 states have call predecessors, (12), 5 states have call successors, (12) [2023-04-02 05:24:12,692 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 05:24:12,692 INFO L93 Difference]: Finished difference Result 20467 states and 29570 transitions. [2023-04-02 05:24:12,693 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2023-04-02 05:24:12,693 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 6.111111111111111) internal successors, (110), 9 states have internal predecessors, (110), 5 states have call successors, (14), 12 states have call predecessors, (14), 4 states have return successors, (12), 4 states have call predecessors, (12), 5 states have call successors, (12) Word has length 136 [2023-04-02 05:24:12,693 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 05:24:12,739 INFO L225 Difference]: With dead ends: 20467 [2023-04-02 05:24:12,740 INFO L226 Difference]: Without dead ends: 12683 [2023-04-02 05:24:12,759 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 252 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=460, Invalid=1346, Unknown=0, NotChecked=0, Total=1806 [2023-04-02 05:24:12,759 INFO L413 NwaCegarLoop]: 20 mSDtfsCounter, 2659 mSDsluCounter, 62 mSDsCounter, 0 mSdLazyCounter, 1098 mSolverCounterSat, 295 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2659 SdHoareTripleChecker+Valid, 82 SdHoareTripleChecker+Invalid, 1393 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 295 IncrementalHoareTripleChecker+Valid, 1098 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-04-02 05:24:12,759 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2659 Valid, 82 Invalid, 1393 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [295 Valid, 1098 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-04-02 05:24:12,770 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12683 states. [2023-04-02 05:24:14,439 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12683 to 8000. [2023-04-02 05:24:14,447 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8000 states, 6104 states have (on average 1.4595347313237221) internal successors, (8909), 6265 states have internal predecessors, (8909), 868 states have call successors, (868), 868 states have call predecessors, (868), 1027 states have return successors, (1760), 866 states have call predecessors, (1760), 867 states have call successors, (1760) [2023-04-02 05:24:14,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8000 states to 8000 states and 11537 transitions. [2023-04-02 05:24:14,464 INFO L78 Accepts]: Start accepts. Automaton has 8000 states and 11537 transitions. Word has length 136 [2023-04-02 05:24:14,464 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 05:24:14,464 INFO L495 AbstractCegarLoop]: Abstraction has 8000 states and 11537 transitions. [2023-04-02 05:24:14,465 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 6.111111111111111) internal successors, (110), 9 states have internal predecessors, (110), 5 states have call successors, (14), 12 states have call predecessors, (14), 4 states have return successors, (12), 4 states have call predecessors, (12), 5 states have call successors, (12) [2023-04-02 05:24:14,465 INFO L276 IsEmpty]: Start isEmpty. Operand 8000 states and 11537 transitions. [2023-04-02 05:24:14,468 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2023-04-02 05:24:14,468 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 05:24:14,468 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 05:24:14,468 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-04-02 05:24:14,468 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 05:24:14,468 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 05:24:14,468 INFO L85 PathProgramCache]: Analyzing trace with hash -539965873, now seen corresponding path program 1 times [2023-04-02 05:24:14,469 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 05:24:14,469 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1730381749] [2023-04-02 05:24:14,469 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 05:24:14,469 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 05:24:14,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:24:14,739 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 05:24:14,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:24:14,758 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-04-02 05:24:14,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:24:14,780 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2023-04-02 05:24:14,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:24:14,791 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-04-02 05:24:14,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:24:14,805 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2023-04-02 05:24:14,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:24:14,819 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2023-04-02 05:24:14,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:24:14,833 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2023-04-02 05:24:14,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:24:14,885 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2023-04-02 05:24:14,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:24:14,908 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2023-04-02 05:24:14,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:24:14,925 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2023-04-02 05:24:14,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:24:14,943 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2023-04-02 05:24:14,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:24:14,947 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2023-04-02 05:24:14,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:24:14,950 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 05:24:14,950 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 05:24:14,950 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1730381749] [2023-04-02 05:24:14,950 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1730381749] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 05:24:14,950 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 05:24:14,950 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2023-04-02 05:24:14,951 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1480699484] [2023-04-02 05:24:14,951 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 05:24:14,951 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-04-02 05:24:14,951 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 05:24:14,952 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-04-02 05:24:14,952 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=263, Unknown=0, NotChecked=0, Total=306 [2023-04-02 05:24:14,952 INFO L87 Difference]: Start difference. First operand 8000 states and 11537 transitions. Second operand has 18 states, 18 states have (on average 6.111111111111111) internal successors, (110), 9 states have internal predecessors, (110), 5 states have call successors, (14), 12 states have call predecessors, (14), 4 states have return successors, (12), 4 states have call predecessors, (12), 5 states have call successors, (12) [2023-04-02 05:24:21,501 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 05:24:21,501 INFO L93 Difference]: Finished difference Result 19887 states and 28620 transitions. [2023-04-02 05:24:21,508 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2023-04-02 05:24:21,509 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 6.111111111111111) internal successors, (110), 9 states have internal predecessors, (110), 5 states have call successors, (14), 12 states have call predecessors, (14), 4 states have return successors, (12), 4 states have call predecessors, (12), 5 states have call successors, (12) Word has length 136 [2023-04-02 05:24:21,509 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 05:24:21,545 INFO L225 Difference]: With dead ends: 19887 [2023-04-02 05:24:21,545 INFO L226 Difference]: Without dead ends: 12016 [2023-04-02 05:24:21,560 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 253 ImplicationChecksByTransitivity, 3.6s TimeCoverageRelationStatistics Valid=460, Invalid=1346, Unknown=0, NotChecked=0, Total=1806 [2023-04-02 05:24:21,561 INFO L413 NwaCegarLoop]: 20 mSDtfsCounter, 2692 mSDsluCounter, 58 mSDsCounter, 0 mSdLazyCounter, 1093 mSolverCounterSat, 273 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2692 SdHoareTripleChecker+Valid, 78 SdHoareTripleChecker+Invalid, 1366 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 273 IncrementalHoareTripleChecker+Valid, 1093 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-04-02 05:24:21,561 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2692 Valid, 78 Invalid, 1366 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [273 Valid, 1093 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-04-02 05:24:21,570 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12016 states. [2023-04-02 05:24:23,303 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12016 to 8090. [2023-04-02 05:24:23,311 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8090 states, 6172 states have (on average 1.458360337005833) internal successors, (9001), 6337 states have internal predecessors, (9001), 877 states have call successors, (877), 877 states have call predecessors, (877), 1040 states have return successors, (1775), 875 states have call predecessors, (1775), 876 states have call successors, (1775) [2023-04-02 05:24:23,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8090 states to 8090 states and 11653 transitions. [2023-04-02 05:24:23,329 INFO L78 Accepts]: Start accepts. Automaton has 8090 states and 11653 transitions. Word has length 136 [2023-04-02 05:24:23,329 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 05:24:23,329 INFO L495 AbstractCegarLoop]: Abstraction has 8090 states and 11653 transitions. [2023-04-02 05:24:23,329 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 6.111111111111111) internal successors, (110), 9 states have internal predecessors, (110), 5 states have call successors, (14), 12 states have call predecessors, (14), 4 states have return successors, (12), 4 states have call predecessors, (12), 5 states have call successors, (12) [2023-04-02 05:24:23,330 INFO L276 IsEmpty]: Start isEmpty. Operand 8090 states and 11653 transitions. [2023-04-02 05:24:23,332 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2023-04-02 05:24:23,332 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 05:24:23,332 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 05:24:23,332 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-04-02 05:24:23,333 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 05:24:23,333 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 05:24:23,333 INFO L85 PathProgramCache]: Analyzing trace with hash 2080180959, now seen corresponding path program 1 times [2023-04-02 05:24:23,333 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 05:24:23,333 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [40044881] [2023-04-02 05:24:23,333 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 05:24:23,333 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 05:24:23,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:24:23,627 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 05:24:23,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:24:23,654 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-04-02 05:24:23,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:24:23,684 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2023-04-02 05:24:23,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:24:23,697 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-04-02 05:24:23,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:24:23,712 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2023-04-02 05:24:23,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:24:23,730 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2023-04-02 05:24:23,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:24:23,748 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2023-04-02 05:24:23,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:24:23,768 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2023-04-02 05:24:23,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:24:23,829 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2023-04-02 05:24:23,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:24:23,851 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2023-04-02 05:24:23,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:24:23,875 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2023-04-02 05:24:23,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:24:23,879 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2023-04-02 05:24:23,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:24:23,881 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 05:24:23,882 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 05:24:23,882 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [40044881] [2023-04-02 05:24:23,882 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [40044881] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 05:24:23,882 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 05:24:23,882 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2023-04-02 05:24:23,882 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [769064158] [2023-04-02 05:24:23,882 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 05:24:23,882 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-04-02 05:24:23,883 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 05:24:23,883 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-04-02 05:24:23,883 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=263, Unknown=0, NotChecked=0, Total=306 [2023-04-02 05:24:23,883 INFO L87 Difference]: Start difference. First operand 8090 states and 11653 transitions. Second operand has 18 states, 18 states have (on average 6.111111111111111) internal successors, (110), 9 states have internal predecessors, (110), 5 states have call successors, (14), 12 states have call predecessors, (14), 4 states have return successors, (12), 4 states have call predecessors, (12), 5 states have call successors, (12) [2023-04-02 05:24:30,289 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 05:24:30,289 INFO L93 Difference]: Finished difference Result 19193 states and 27553 transitions. [2023-04-02 05:24:30,290 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2023-04-02 05:24:30,290 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 6.111111111111111) internal successors, (110), 9 states have internal predecessors, (110), 5 states have call successors, (14), 12 states have call predecessors, (14), 4 states have return successors, (12), 4 states have call predecessors, (12), 5 states have call successors, (12) Word has length 136 [2023-04-02 05:24:30,290 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 05:24:30,319 INFO L225 Difference]: With dead ends: 19193 [2023-04-02 05:24:30,319 INFO L226 Difference]: Without dead ends: 11286 [2023-04-02 05:24:30,332 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 254 ImplicationChecksByTransitivity, 3.6s TimeCoverageRelationStatistics Valid=460, Invalid=1346, Unknown=0, NotChecked=0, Total=1806 [2023-04-02 05:24:30,333 INFO L413 NwaCegarLoop]: 20 mSDtfsCounter, 2734 mSDsluCounter, 62 mSDsCounter, 0 mSdLazyCounter, 1105 mSolverCounterSat, 312 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2734 SdHoareTripleChecker+Valid, 82 SdHoareTripleChecker+Invalid, 1417 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 312 IncrementalHoareTripleChecker+Valid, 1105 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-04-02 05:24:30,333 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2734 Valid, 82 Invalid, 1417 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [312 Valid, 1105 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-04-02 05:24:30,342 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11286 states. [2023-04-02 05:24:32,154 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11286 to 8180. [2023-04-02 05:24:32,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8180 states, 6240 states have (on average 1.4572115384615385) internal successors, (9093), 6409 states have internal predecessors, (9093), 886 states have call successors, (886), 886 states have call predecessors, (886), 1053 states have return successors, (1790), 884 states have call predecessors, (1790), 885 states have call successors, (1790) [2023-04-02 05:24:32,204 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8180 states to 8180 states and 11769 transitions. [2023-04-02 05:24:32,206 INFO L78 Accepts]: Start accepts. Automaton has 8180 states and 11769 transitions. Word has length 136 [2023-04-02 05:24:32,206 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 05:24:32,206 INFO L495 AbstractCegarLoop]: Abstraction has 8180 states and 11769 transitions. [2023-04-02 05:24:32,207 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 6.111111111111111) internal successors, (110), 9 states have internal predecessors, (110), 5 states have call successors, (14), 12 states have call predecessors, (14), 4 states have return successors, (12), 4 states have call predecessors, (12), 5 states have call successors, (12) [2023-04-02 05:24:32,207 INFO L276 IsEmpty]: Start isEmpty. Operand 8180 states and 11769 transitions. [2023-04-02 05:24:32,213 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2023-04-02 05:24:32,213 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 05:24:32,213 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 05:24:32,214 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-04-02 05:24:32,214 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 05:24:32,214 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 05:24:32,214 INFO L85 PathProgramCache]: Analyzing trace with hash 1047525599, now seen corresponding path program 1 times [2023-04-02 05:24:32,214 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 05:24:32,214 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1065636201] [2023-04-02 05:24:32,214 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 05:24:32,214 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 05:24:32,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:24:32,466 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 05:24:32,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:24:32,481 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-04-02 05:24:32,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:24:32,499 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2023-04-02 05:24:32,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:24:32,511 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-04-02 05:24:32,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:24:32,524 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2023-04-02 05:24:32,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:24:32,537 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2023-04-02 05:24:32,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:24:32,552 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2023-04-02 05:24:32,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:24:32,567 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2023-04-02 05:24:32,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:24:32,583 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2023-04-02 05:24:32,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:24:32,600 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2023-04-02 05:24:32,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:24:32,657 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2023-04-02 05:24:32,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:24:32,660 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2023-04-02 05:24:32,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:24:32,662 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 05:24:32,663 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 05:24:32,663 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1065636201] [2023-04-02 05:24:32,663 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1065636201] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 05:24:32,663 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 05:24:32,663 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2023-04-02 05:24:32,663 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1170860456] [2023-04-02 05:24:32,663 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 05:24:32,663 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-04-02 05:24:32,663 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 05:24:32,664 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-04-02 05:24:32,664 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=263, Unknown=0, NotChecked=0, Total=306 [2023-04-02 05:24:32,664 INFO L87 Difference]: Start difference. First operand 8180 states and 11769 transitions. Second operand has 18 states, 18 states have (on average 6.111111111111111) internal successors, (110), 9 states have internal predecessors, (110), 5 states have call successors, (14), 12 states have call predecessors, (14), 4 states have return successors, (12), 4 states have call predecessors, (12), 5 states have call successors, (12) [2023-04-02 05:24:38,728 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 05:24:38,728 INFO L93 Difference]: Finished difference Result 17699 states and 25308 transitions. [2023-04-02 05:24:38,729 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2023-04-02 05:24:38,729 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 6.111111111111111) internal successors, (110), 9 states have internal predecessors, (110), 5 states have call successors, (14), 12 states have call predecessors, (14), 4 states have return successors, (12), 4 states have call predecessors, (12), 5 states have call successors, (12) Word has length 136 [2023-04-02 05:24:38,729 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 05:24:38,751 INFO L225 Difference]: With dead ends: 17699 [2023-04-02 05:24:38,751 INFO L226 Difference]: Without dead ends: 9756 [2023-04-02 05:24:38,762 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 256 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=460, Invalid=1346, Unknown=0, NotChecked=0, Total=1806 [2023-04-02 05:24:38,762 INFO L413 NwaCegarLoop]: 20 mSDtfsCounter, 2630 mSDsluCounter, 58 mSDsCounter, 0 mSdLazyCounter, 1116 mSolverCounterSat, 268 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2630 SdHoareTripleChecker+Valid, 78 SdHoareTripleChecker+Invalid, 1384 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 268 IncrementalHoareTripleChecker+Valid, 1116 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-04-02 05:24:38,762 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2630 Valid, 78 Invalid, 1384 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [268 Valid, 1116 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-04-02 05:24:38,768 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9756 states. [2023-04-02 05:24:40,595 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9756 to 8371. [2023-04-02 05:24:40,602 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8371 states, 6380 states have (on average 1.4553291536050157) internal successors, (9285), 6562 states have internal predecessors, (9285), 905 states have call successors, (905), 905 states have call predecessors, (905), 1085 states have return successors, (1829), 903 states have call predecessors, (1829), 904 states have call successors, (1829) [2023-04-02 05:24:40,618 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8371 states to 8371 states and 12019 transitions. [2023-04-02 05:24:40,619 INFO L78 Accepts]: Start accepts. Automaton has 8371 states and 12019 transitions. Word has length 136 [2023-04-02 05:24:40,619 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 05:24:40,619 INFO L495 AbstractCegarLoop]: Abstraction has 8371 states and 12019 transitions. [2023-04-02 05:24:40,619 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 6.111111111111111) internal successors, (110), 9 states have internal predecessors, (110), 5 states have call successors, (14), 12 states have call predecessors, (14), 4 states have return successors, (12), 4 states have call predecessors, (12), 5 states have call successors, (12) [2023-04-02 05:24:40,620 INFO L276 IsEmpty]: Start isEmpty. Operand 8371 states and 12019 transitions. [2023-04-02 05:24:40,622 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2023-04-02 05:24:40,622 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 05:24:40,622 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 05:24:40,622 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-04-02 05:24:40,622 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 05:24:40,622 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 05:24:40,623 INFO L85 PathProgramCache]: Analyzing trace with hash 927531727, now seen corresponding path program 1 times [2023-04-02 05:24:40,623 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 05:24:40,623 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1729016369] [2023-04-02 05:24:40,623 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 05:24:40,623 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 05:24:40,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:24:40,879 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 05:24:40,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:24:40,896 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-04-02 05:24:40,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:24:40,915 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2023-04-02 05:24:40,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:24:40,927 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-04-02 05:24:40,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:24:40,941 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2023-04-02 05:24:40,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:24:40,964 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2023-04-02 05:24:40,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:24:40,981 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2023-04-02 05:24:40,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:24:41,002 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2023-04-02 05:24:41,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:24:41,022 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2023-04-02 05:24:41,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:24:41,043 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2023-04-02 05:24:41,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:24:41,064 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2023-04-02 05:24:41,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:24:41,105 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2023-04-02 05:24:41,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:24:41,108 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 05:24:41,108 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 05:24:41,108 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1729016369] [2023-04-02 05:24:41,108 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1729016369] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 05:24:41,108 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 05:24:41,108 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2023-04-02 05:24:41,108 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1411235874] [2023-04-02 05:24:41,109 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 05:24:41,109 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-04-02 05:24:41,109 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 05:24:41,109 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-04-02 05:24:41,109 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=263, Unknown=0, NotChecked=0, Total=306 [2023-04-02 05:24:41,110 INFO L87 Difference]: Start difference. First operand 8371 states and 12019 transitions. Second operand has 18 states, 18 states have (on average 6.111111111111111) internal successors, (110), 9 states have internal predecessors, (110), 5 states have call successors, (14), 12 states have call predecessors, (14), 4 states have return successors, (12), 4 states have call predecessors, (12), 5 states have call successors, (12) [2023-04-02 05:24:46,927 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 05:24:46,927 INFO L93 Difference]: Finished difference Result 17070 states and 24312 transitions. [2023-04-02 05:24:46,928 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2023-04-02 05:24:46,928 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 6.111111111111111) internal successors, (110), 9 states have internal predecessors, (110), 5 states have call successors, (14), 12 states have call predecessors, (14), 4 states have return successors, (12), 4 states have call predecessors, (12), 5 states have call successors, (12) Word has length 136 [2023-04-02 05:24:46,928 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 05:24:46,948 INFO L225 Difference]: With dead ends: 17070 [2023-04-02 05:24:46,948 INFO L226 Difference]: Without dead ends: 9061 [2023-04-02 05:24:46,959 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 257 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=460, Invalid=1346, Unknown=0, NotChecked=0, Total=1806 [2023-04-02 05:24:46,959 INFO L413 NwaCegarLoop]: 20 mSDtfsCounter, 2153 mSDsluCounter, 62 mSDsCounter, 0 mSdLazyCounter, 1182 mSolverCounterSat, 206 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2153 SdHoareTripleChecker+Valid, 82 SdHoareTripleChecker+Invalid, 1388 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 206 IncrementalHoareTripleChecker+Valid, 1182 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-04-02 05:24:46,959 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2153 Valid, 82 Invalid, 1388 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [206 Valid, 1182 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-04-02 05:24:46,965 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9061 states. [2023-04-02 05:24:48,866 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9061 to 8461. [2023-04-02 05:24:48,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8461 states, 6450 states have (on average 1.4534883720930232) internal successors, (9375), 6632 states have internal predecessors, (9375), 915 states have call successors, (915), 915 states have call predecessors, (915), 1095 states have return successors, (1839), 913 states have call predecessors, (1839), 914 states have call successors, (1839) [2023-04-02 05:24:48,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8461 states to 8461 states and 12129 transitions. [2023-04-02 05:24:48,893 INFO L78 Accepts]: Start accepts. Automaton has 8461 states and 12129 transitions. Word has length 136 [2023-04-02 05:24:48,894 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 05:24:48,894 INFO L495 AbstractCegarLoop]: Abstraction has 8461 states and 12129 transitions. [2023-04-02 05:24:48,894 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 6.111111111111111) internal successors, (110), 9 states have internal predecessors, (110), 5 states have call successors, (14), 12 states have call predecessors, (14), 4 states have return successors, (12), 4 states have call predecessors, (12), 5 states have call successors, (12) [2023-04-02 05:24:48,894 INFO L276 IsEmpty]: Start isEmpty. Operand 8461 states and 12129 transitions. [2023-04-02 05:24:48,896 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2023-04-02 05:24:48,896 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 05:24:48,896 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 05:24:48,896 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-04-02 05:24:48,896 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 05:24:48,897 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 05:24:48,897 INFO L85 PathProgramCache]: Analyzing trace with hash 11157583, now seen corresponding path program 1 times [2023-04-02 05:24:48,897 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 05:24:48,897 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1365502578] [2023-04-02 05:24:48,897 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 05:24:48,897 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 05:24:48,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:24:49,175 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 05:24:49,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:24:49,191 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-04-02 05:24:49,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:24:49,211 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2023-04-02 05:24:49,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:24:49,223 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-04-02 05:24:49,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:24:49,235 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2023-04-02 05:24:49,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:24:49,248 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2023-04-02 05:24:49,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:24:49,262 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2023-04-02 05:24:49,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:24:49,277 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2023-04-02 05:24:49,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:24:49,294 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2023-04-02 05:24:49,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:24:49,354 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2023-04-02 05:24:49,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:24:49,375 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2023-04-02 05:24:49,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:24:49,378 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2023-04-02 05:24:49,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:24:49,380 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 05:24:49,380 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 05:24:49,380 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1365502578] [2023-04-02 05:24:49,381 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1365502578] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 05:24:49,381 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 05:24:49,381 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2023-04-02 05:24:49,381 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [30725794] [2023-04-02 05:24:49,381 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 05:24:49,381 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-04-02 05:24:49,381 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 05:24:49,382 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-04-02 05:24:49,382 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=263, Unknown=0, NotChecked=0, Total=306 [2023-04-02 05:24:49,382 INFO L87 Difference]: Start difference. First operand 8461 states and 12129 transitions. Second operand has 18 states, 18 states have (on average 6.111111111111111) internal successors, (110), 9 states have internal predecessors, (110), 5 states have call successors, (14), 12 states have call predecessors, (14), 4 states have return successors, (12), 4 states have call predecessors, (12), 5 states have call successors, (12) [2023-04-02 05:24:55,672 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 05:24:55,672 INFO L93 Difference]: Finished difference Result 18891 states and 26982 transitions. [2023-04-02 05:24:55,672 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2023-04-02 05:24:55,673 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 6.111111111111111) internal successors, (110), 9 states have internal predecessors, (110), 5 states have call successors, (14), 12 states have call predecessors, (14), 4 states have return successors, (12), 4 states have call predecessors, (12), 5 states have call successors, (12) Word has length 136 [2023-04-02 05:24:55,673 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 05:24:55,694 INFO L225 Difference]: With dead ends: 18891 [2023-04-02 05:24:55,694 INFO L226 Difference]: Without dead ends: 10760 [2023-04-02 05:24:55,703 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 255 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=460, Invalid=1346, Unknown=0, NotChecked=0, Total=1806 [2023-04-02 05:24:55,703 INFO L413 NwaCegarLoop]: 20 mSDtfsCounter, 2903 mSDsluCounter, 58 mSDsCounter, 0 mSdLazyCounter, 1094 mSolverCounterSat, 330 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2903 SdHoareTripleChecker+Valid, 78 SdHoareTripleChecker+Invalid, 1424 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 330 IncrementalHoareTripleChecker+Valid, 1094 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-04-02 05:24:55,703 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2903 Valid, 78 Invalid, 1424 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [330 Valid, 1094 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-04-02 05:24:55,709 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10760 states. [2023-04-02 05:24:57,697 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10760 to 8893. [2023-04-02 05:24:57,704 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8893 states, 6771 states have (on average 1.4556195539802097) internal successors, (9856), 6988 states have internal predecessors, (9856), 953 states have call successors, (953), 953 states have call predecessors, (953), 1168 states have return successors, (1940), 951 states have call predecessors, (1940), 952 states have call successors, (1940) [2023-04-02 05:24:57,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8893 states to 8893 states and 12749 transitions. [2023-04-02 05:24:57,722 INFO L78 Accepts]: Start accepts. Automaton has 8893 states and 12749 transitions. Word has length 136 [2023-04-02 05:24:57,722 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 05:24:57,722 INFO L495 AbstractCegarLoop]: Abstraction has 8893 states and 12749 transitions. [2023-04-02 05:24:57,723 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 6.111111111111111) internal successors, (110), 9 states have internal predecessors, (110), 5 states have call successors, (14), 12 states have call predecessors, (14), 4 states have return successors, (12), 4 states have call predecessors, (12), 5 states have call successors, (12) [2023-04-02 05:24:57,723 INFO L276 IsEmpty]: Start isEmpty. Operand 8893 states and 12749 transitions. [2023-04-02 05:24:57,724 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2023-04-02 05:24:57,724 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 05:24:57,724 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 05:24:57,724 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-04-02 05:24:57,725 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 05:24:57,725 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 05:24:57,725 INFO L85 PathProgramCache]: Analyzing trace with hash -2047857841, now seen corresponding path program 1 times [2023-04-02 05:24:57,725 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 05:24:57,725 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [218220281] [2023-04-02 05:24:57,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 05:24:57,725 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 05:24:57,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:24:57,991 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 05:24:57,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:24:58,007 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-04-02 05:24:58,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:24:58,028 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2023-04-02 05:24:58,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:24:58,040 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-04-02 05:24:58,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:24:58,054 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2023-04-02 05:24:58,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:24:58,098 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2023-04-02 05:24:58,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:24:58,116 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2023-04-02 05:24:58,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:24:58,135 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2023-04-02 05:24:58,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:24:58,155 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2023-04-02 05:24:58,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:24:58,176 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2023-04-02 05:24:58,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:24:58,198 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2023-04-02 05:24:58,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:24:58,201 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2023-04-02 05:24:58,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:24:58,203 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 05:24:58,203 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 05:24:58,203 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [218220281] [2023-04-02 05:24:58,203 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [218220281] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 05:24:58,203 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 05:24:58,203 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2023-04-02 05:24:58,203 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1031295042] [2023-04-02 05:24:58,203 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 05:24:58,204 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-04-02 05:24:58,204 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 05:24:58,204 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-04-02 05:24:58,204 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=263, Unknown=0, NotChecked=0, Total=306 [2023-04-02 05:24:58,204 INFO L87 Difference]: Start difference. First operand 8893 states and 12749 transitions. Second operand has 18 states, 18 states have (on average 6.111111111111111) internal successors, (110), 9 states have internal predecessors, (110), 5 states have call successors, (14), 12 states have call predecessors, (14), 4 states have return successors, (12), 4 states have call predecessors, (12), 5 states have call successors, (12) [2023-04-02 05:25:05,363 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 05:25:05,363 INFO L93 Difference]: Finished difference Result 23717 states and 34132 transitions. [2023-04-02 05:25:05,364 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2023-04-02 05:25:05,364 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 6.111111111111111) internal successors, (110), 9 states have internal predecessors, (110), 5 states have call successors, (14), 12 states have call predecessors, (14), 4 states have return successors, (12), 4 states have call predecessors, (12), 5 states have call successors, (12) Word has length 136 [2023-04-02 05:25:05,364 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 05:25:05,407 INFO L225 Difference]: With dead ends: 23717 [2023-04-02 05:25:05,407 INFO L226 Difference]: Without dead ends: 14938 [2023-04-02 05:25:05,419 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 251 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=460, Invalid=1346, Unknown=0, NotChecked=0, Total=1806 [2023-04-02 05:25:05,420 INFO L413 NwaCegarLoop]: 20 mSDtfsCounter, 2773 mSDsluCounter, 62 mSDsCounter, 0 mSdLazyCounter, 1110 mSolverCounterSat, 338 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2773 SdHoareTripleChecker+Valid, 82 SdHoareTripleChecker+Invalid, 1448 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 338 IncrementalHoareTripleChecker+Valid, 1110 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-04-02 05:25:05,420 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2773 Valid, 82 Invalid, 1448 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [338 Valid, 1110 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-04-02 05:25:05,431 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14938 states. [2023-04-02 05:25:07,850 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14938 to 10005. [2023-04-02 05:25:07,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10005 states, 7606 states have (on average 1.4662108861425192) internal successors, (11152), 7886 states have internal predecessors, (11152), 1060 states have call successors, (1060), 1060 states have call predecessors, (1060), 1338 states have return successors, (2215), 1058 states have call predecessors, (2215), 1059 states have call successors, (2215) [2023-04-02 05:25:07,873 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10005 states to 10005 states and 14427 transitions. [2023-04-02 05:25:07,874 INFO L78 Accepts]: Start accepts. Automaton has 10005 states and 14427 transitions. Word has length 136 [2023-04-02 05:25:07,875 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 05:25:07,875 INFO L495 AbstractCegarLoop]: Abstraction has 10005 states and 14427 transitions. [2023-04-02 05:25:07,875 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 6.111111111111111) internal successors, (110), 9 states have internal predecessors, (110), 5 states have call successors, (14), 12 states have call predecessors, (14), 4 states have return successors, (12), 4 states have call predecessors, (12), 5 states have call successors, (12) [2023-04-02 05:25:07,875 INFO L276 IsEmpty]: Start isEmpty. Operand 10005 states and 14427 transitions. [2023-04-02 05:25:07,876 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2023-04-02 05:25:07,876 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 05:25:07,876 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 05:25:07,876 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-04-02 05:25:07,876 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 05:25:07,876 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 05:25:07,876 INFO L85 PathProgramCache]: Analyzing trace with hash 329826852, now seen corresponding path program 1 times [2023-04-02 05:25:07,876 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 05:25:07,876 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1258442331] [2023-04-02 05:25:07,877 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 05:25:07,877 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 05:25:07,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:25:08,133 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 05:25:08,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:25:08,149 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-04-02 05:25:08,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:25:08,170 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2023-04-02 05:25:08,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:25:08,182 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-04-02 05:25:08,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:25:08,225 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2023-04-02 05:25:08,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:25:08,242 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2023-04-02 05:25:08,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:25:08,259 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2023-04-02 05:25:08,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:25:08,278 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2023-04-02 05:25:08,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:25:08,298 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2023-04-02 05:25:08,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:25:08,319 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2023-04-02 05:25:08,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:25:08,341 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2023-04-02 05:25:08,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:25:08,344 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2023-04-02 05:25:08,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:25:08,346 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 05:25:08,346 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 05:25:08,346 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1258442331] [2023-04-02 05:25:08,346 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1258442331] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 05:25:08,346 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 05:25:08,346 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2023-04-02 05:25:08,346 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [350978254] [2023-04-02 05:25:08,346 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 05:25:08,346 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-04-02 05:25:08,346 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 05:25:08,347 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-04-02 05:25:08,347 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=263, Unknown=0, NotChecked=0, Total=306 [2023-04-02 05:25:08,347 INFO L87 Difference]: Start difference. First operand 10005 states and 14427 transitions. Second operand has 18 states, 18 states have (on average 6.222222222222222) internal successors, (112), 9 states have internal predecessors, (112), 5 states have call successors, (14), 12 states have call predecessors, (14), 4 states have return successors, (12), 3 states have call predecessors, (12), 5 states have call successors, (12) [2023-04-02 05:25:15,347 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 05:25:15,347 INFO L93 Difference]: Finished difference Result 19736 states and 28625 transitions. [2023-04-02 05:25:15,348 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2023-04-02 05:25:15,348 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 6.222222222222222) internal successors, (112), 9 states have internal predecessors, (112), 5 states have call successors, (14), 12 states have call predecessors, (14), 4 states have return successors, (12), 3 states have call predecessors, (12), 5 states have call successors, (12) Word has length 138 [2023-04-02 05:25:15,348 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 05:25:15,374 INFO L225 Difference]: With dead ends: 19736 [2023-04-02 05:25:15,374 INFO L226 Difference]: Without dead ends: 12876 [2023-04-02 05:25:15,383 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 250 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=460, Invalid=1346, Unknown=0, NotChecked=0, Total=1806 [2023-04-02 05:25:15,383 INFO L413 NwaCegarLoop]: 20 mSDtfsCounter, 2250 mSDsluCounter, 58 mSDsCounter, 0 mSdLazyCounter, 1157 mSolverCounterSat, 215 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2250 SdHoareTripleChecker+Valid, 78 SdHoareTripleChecker+Invalid, 1372 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 215 IncrementalHoareTripleChecker+Valid, 1157 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-04-02 05:25:15,384 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2250 Valid, 78 Invalid, 1372 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [215 Valid, 1157 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-04-02 05:25:15,391 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12876 states. [2023-04-02 05:25:17,852 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12876 to 9832. [2023-04-02 05:25:17,859 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9832 states, 7500 states have (on average 1.4704) internal successors, (11028), 7729 states have internal predecessors, (11028), 1052 states have call successors, (1052), 1052 states have call predecessors, (1052), 1279 states have return successors, (2157), 1050 states have call predecessors, (2157), 1051 states have call successors, (2157) [2023-04-02 05:25:17,874 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9832 states to 9832 states and 14237 transitions. [2023-04-02 05:25:17,875 INFO L78 Accepts]: Start accepts. Automaton has 9832 states and 14237 transitions. Word has length 138 [2023-04-02 05:25:17,877 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 05:25:17,877 INFO L495 AbstractCegarLoop]: Abstraction has 9832 states and 14237 transitions. [2023-04-02 05:25:17,877 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 6.222222222222222) internal successors, (112), 9 states have internal predecessors, (112), 5 states have call successors, (14), 12 states have call predecessors, (14), 4 states have return successors, (12), 3 states have call predecessors, (12), 5 states have call successors, (12) [2023-04-02 05:25:17,877 INFO L276 IsEmpty]: Start isEmpty. Operand 9832 states and 14237 transitions. [2023-04-02 05:25:17,878 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2023-04-02 05:25:17,878 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 05:25:17,878 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 05:25:17,878 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-04-02 05:25:17,878 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 05:25:17,878 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 05:25:17,878 INFO L85 PathProgramCache]: Analyzing trace with hash -1572602467, now seen corresponding path program 1 times [2023-04-02 05:25:17,878 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 05:25:17,878 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1512389155] [2023-04-02 05:25:17,878 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 05:25:17,879 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 05:25:17,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:25:18,174 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 05:25:18,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:25:18,183 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-04-02 05:25:18,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:25:18,201 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2023-04-02 05:25:18,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:25:18,214 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-04-02 05:25:18,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:25:18,252 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2023-04-02 05:25:18,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:25:18,270 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2023-04-02 05:25:18,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:25:18,285 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2023-04-02 05:25:18,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:25:18,302 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2023-04-02 05:25:18,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:25:18,319 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2023-04-02 05:25:18,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:25:18,338 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2023-04-02 05:25:18,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:25:18,357 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2023-04-02 05:25:18,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:25:18,360 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2023-04-02 05:25:18,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:25:18,362 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 05:25:18,362 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 05:25:18,363 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1512389155] [2023-04-02 05:25:18,364 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1512389155] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 05:25:18,364 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 05:25:18,364 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2023-04-02 05:25:18,364 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [325664523] [2023-04-02 05:25:18,364 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 05:25:18,365 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-04-02 05:25:18,365 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 05:25:18,365 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-04-02 05:25:18,365 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2023-04-02 05:25:18,365 INFO L87 Difference]: Start difference. First operand 9832 states and 14237 transitions. Second operand has 14 states, 14 states have (on average 8.071428571428571) internal successors, (113), 5 states have internal predecessors, (113), 3 states have call successors, (14), 11 states have call predecessors, (14), 3 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2023-04-02 05:25:23,586 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 05:25:23,586 INFO L93 Difference]: Finished difference Result 19163 states and 27800 transitions. [2023-04-02 05:25:23,586 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2023-04-02 05:25:23,587 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 8.071428571428571) internal successors, (113), 5 states have internal predecessors, (113), 3 states have call successors, (14), 11 states have call predecessors, (14), 3 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) Word has length 139 [2023-04-02 05:25:23,587 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 05:25:23,615 INFO L225 Difference]: With dead ends: 19163 [2023-04-02 05:25:23,615 INFO L226 Difference]: Without dead ends: 11800 [2023-04-02 05:25:23,625 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 171 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=280, Invalid=776, Unknown=0, NotChecked=0, Total=1056 [2023-04-02 05:25:23,625 INFO L413 NwaCegarLoop]: 44 mSDtfsCounter, 1412 mSDsluCounter, 79 mSDsCounter, 0 mSdLazyCounter, 1145 mSolverCounterSat, 101 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1421 SdHoareTripleChecker+Valid, 123 SdHoareTripleChecker+Invalid, 1246 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 101 IncrementalHoareTripleChecker+Valid, 1145 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-04-02 05:25:23,626 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1421 Valid, 123 Invalid, 1246 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [101 Valid, 1145 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-04-02 05:25:23,634 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11800 states. [2023-04-02 05:25:26,367 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11800 to 10969. [2023-04-02 05:25:26,376 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10969 states, 8354 states have (on average 1.4496049796504669) internal successors, (12110), 8546 states have internal predecessors, (12110), 1212 states have call successors, (1212), 1212 states have call predecessors, (1212), 1402 states have return successors, (2385), 1210 states have call predecessors, (2385), 1211 states have call successors, (2385) [2023-04-02 05:25:26,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10969 states to 10969 states and 15707 transitions. [2023-04-02 05:25:26,397 INFO L78 Accepts]: Start accepts. Automaton has 10969 states and 15707 transitions. Word has length 139 [2023-04-02 05:25:26,397 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 05:25:26,397 INFO L495 AbstractCegarLoop]: Abstraction has 10969 states and 15707 transitions. [2023-04-02 05:25:26,397 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 8.071428571428571) internal successors, (113), 5 states have internal predecessors, (113), 3 states have call successors, (14), 11 states have call predecessors, (14), 3 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2023-04-02 05:25:26,397 INFO L276 IsEmpty]: Start isEmpty. Operand 10969 states and 15707 transitions. [2023-04-02 05:25:26,401 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 194 [2023-04-02 05:25:26,401 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 05:25:26,401 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 05:25:26,401 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-04-02 05:25:26,402 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 05:25:26,402 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 05:25:26,402 INFO L85 PathProgramCache]: Analyzing trace with hash -527832589, now seen corresponding path program 1 times [2023-04-02 05:25:26,402 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 05:25:26,402 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [374591965] [2023-04-02 05:25:26,402 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 05:25:26,402 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 05:25:26,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:25:26,996 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 05:25:27,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:25:27,008 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-04-02 05:25:27,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:25:27,022 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2023-04-02 05:25:27,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:25:27,033 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-04-02 05:25:27,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:25:27,046 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2023-04-02 05:25:27,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:25:27,059 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2023-04-02 05:25:27,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:25:27,085 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2023-04-02 05:25:27,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:25:27,100 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2023-04-02 05:25:27,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:25:27,115 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2023-04-02 05:25:27,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:25:27,132 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2023-04-02 05:25:27,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:25:27,149 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2023-04-02 05:25:27,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:25:27,155 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2023-04-02 05:25:27,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:25:27,169 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2023-04-02 05:25:27,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:25:27,172 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2023-04-02 05:25:27,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:25:27,188 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2023-04-02 05:25:27,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:25:27,206 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2023-04-02 05:25:27,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:25:27,219 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2023-04-02 05:25:27,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:25:27,239 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 161 [2023-04-02 05:25:27,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:25:27,260 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 166 [2023-04-02 05:25:27,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:25:27,284 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 171 [2023-04-02 05:25:27,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:25:27,306 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 176 [2023-04-02 05:25:27,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:25:27,331 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 182 [2023-04-02 05:25:27,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:25:27,348 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 32 proven. 10 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-04-02 05:25:27,348 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 05:25:27,348 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [374591965] [2023-04-02 05:25:27,348 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [374591965] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-02 05:25:27,348 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1237018550] [2023-04-02 05:25:27,348 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 05:25:27,349 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 05:25:27,349 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-02 05:25:27,351 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-02 05:25:27,353 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-04-02 05:25:27,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:25:27,641 INFO L262 TraceCheckSpWp]: Trace formula consists of 1444 conjuncts, 37 conjunts are in the unsatisfiable core [2023-04-02 05:25:27,655 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-02 05:25:29,828 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 38 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-04-02 05:25:29,829 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-04-02 05:25:29,829 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1237018550] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 05:25:29,829 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-04-02 05:25:29,829 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [25] total 45 [2023-04-02 05:25:29,829 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1981640974] [2023-04-02 05:25:29,829 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 05:25:29,829 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2023-04-02 05:25:29,830 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 05:25:29,830 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2023-04-02 05:25:29,830 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=191, Invalid=1789, Unknown=0, NotChecked=0, Total=1980 [2023-04-02 05:25:29,831 INFO L87 Difference]: Start difference. First operand 10969 states and 15707 transitions. Second operand has 22 states, 22 states have (on average 6.318181818181818) internal successors, (139), 22 states have internal predecessors, (139), 4 states have call successors, (21), 16 states have call predecessors, (21), 16 states have return successors, (20), 4 states have call predecessors, (20), 3 states have call successors, (20) [2023-04-02 05:25:36,627 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 05:25:36,628 INFO L93 Difference]: Finished difference Result 21928 states and 31499 transitions. [2023-04-02 05:25:36,628 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-04-02 05:25:36,628 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 6.318181818181818) internal successors, (139), 22 states have internal predecessors, (139), 4 states have call successors, (21), 16 states have call predecessors, (21), 16 states have return successors, (20), 4 states have call predecessors, (20), 3 states have call successors, (20) Word has length 193 [2023-04-02 05:25:36,629 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 05:25:36,680 INFO L225 Difference]: With dead ends: 21928 [2023-04-02 05:25:36,681 INFO L226 Difference]: Without dead ends: 17797 [2023-04-02 05:25:36,692 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 256 GetRequests, 211 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 544 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=232, Invalid=1930, Unknown=0, NotChecked=0, Total=2162 [2023-04-02 05:25:36,692 INFO L413 NwaCegarLoop]: 76 mSDtfsCounter, 2535 mSDsluCounter, 1115 mSDsCounter, 0 mSdLazyCounter, 4404 mSolverCounterSat, 170 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2541 SdHoareTripleChecker+Valid, 1191 SdHoareTripleChecker+Invalid, 4574 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 170 IncrementalHoareTripleChecker+Valid, 4404 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2023-04-02 05:25:36,692 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2541 Valid, 1191 Invalid, 4574 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [170 Valid, 4404 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2023-04-02 05:25:36,709 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17797 states. [2023-04-02 05:25:41,461 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17797 to 17781. [2023-04-02 05:25:41,476 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17781 states, 13548 states have (on average 1.4540153528196045) internal successors, (19699), 13830 states have internal predecessors, (19699), 1976 states have call successors, (1976), 1976 states have call predecessors, (1976), 2256 states have return successors, (3900), 1974 states have call predecessors, (3900), 1975 states have call successors, (3900) [2023-04-02 05:25:41,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17781 states to 17781 states and 25575 transitions. [2023-04-02 05:25:41,511 INFO L78 Accepts]: Start accepts. Automaton has 17781 states and 25575 transitions. Word has length 193 [2023-04-02 05:25:41,511 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 05:25:41,511 INFO L495 AbstractCegarLoop]: Abstraction has 17781 states and 25575 transitions. [2023-04-02 05:25:41,511 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 6.318181818181818) internal successors, (139), 22 states have internal predecessors, (139), 4 states have call successors, (21), 16 states have call predecessors, (21), 16 states have return successors, (20), 4 states have call predecessors, (20), 3 states have call successors, (20) [2023-04-02 05:25:41,511 INFO L276 IsEmpty]: Start isEmpty. Operand 17781 states and 25575 transitions. [2023-04-02 05:25:41,515 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 194 [2023-04-02 05:25:41,515 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 05:25:41,516 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 05:25:41,532 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-04-02 05:25:41,729 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2023-04-02 05:25:41,729 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 05:25:41,730 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 05:25:41,730 INFO L85 PathProgramCache]: Analyzing trace with hash 1361220835, now seen corresponding path program 1 times [2023-04-02 05:25:41,730 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 05:25:41,730 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [109962553] [2023-04-02 05:25:41,730 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 05:25:41,730 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 05:25:41,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:25:42,315 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 05:25:42,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:25:42,324 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-04-02 05:25:42,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:25:42,355 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2023-04-02 05:25:42,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:25:42,371 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-04-02 05:25:42,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:25:42,387 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2023-04-02 05:25:42,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:25:42,402 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2023-04-02 05:25:42,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:25:42,425 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2023-04-02 05:25:42,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:25:42,455 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2023-04-02 05:25:42,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:25:42,474 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2023-04-02 05:25:42,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:25:42,492 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2023-04-02 05:25:42,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:25:42,510 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2023-04-02 05:25:42,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:25:42,516 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2023-04-02 05:25:42,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:25:42,531 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2023-04-02 05:25:42,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:25:42,540 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2023-04-02 05:25:42,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:25:42,558 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2023-04-02 05:25:42,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:25:42,576 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2023-04-02 05:25:42,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:25:42,596 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2023-04-02 05:25:42,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:25:42,610 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 161 [2023-04-02 05:25:42,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:25:42,630 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 166 [2023-04-02 05:25:42,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:25:42,649 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 171 [2023-04-02 05:25:42,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:25:42,670 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 176 [2023-04-02 05:25:42,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:25:42,691 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 182 [2023-04-02 05:25:42,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:25:42,709 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 31 proven. 11 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-04-02 05:25:42,709 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 05:25:42,709 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [109962553] [2023-04-02 05:25:42,709 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [109962553] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-02 05:25:42,709 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [521673088] [2023-04-02 05:25:42,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 05:25:42,709 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 05:25:42,710 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-02 05:25:42,711 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-02 05:25:42,713 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-04-02 05:25:42,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:25:42,971 INFO L262 TraceCheckSpWp]: Trace formula consists of 1444 conjuncts, 37 conjunts are in the unsatisfiable core [2023-04-02 05:25:42,979 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-02 05:25:45,198 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 33 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2023-04-02 05:25:45,198 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-04-02 05:25:45,198 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [521673088] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 05:25:45,199 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-04-02 05:25:45,199 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [25] total 44 [2023-04-02 05:25:45,199 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [264324486] [2023-04-02 05:25:45,199 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 05:25:45,199 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2023-04-02 05:25:45,199 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 05:25:45,200 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2023-04-02 05:25:45,200 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=186, Invalid=1706, Unknown=0, NotChecked=0, Total=1892 [2023-04-02 05:25:45,200 INFO L87 Difference]: Start difference. First operand 17781 states and 25575 transitions. Second operand has 21 states, 21 states have (on average 6.476190476190476) internal successors, (136), 21 states have internal predecessors, (136), 4 states have call successors, (20), 15 states have call predecessors, (20), 15 states have return successors, (19), 4 states have call predecessors, (19), 3 states have call successors, (19) [2023-04-02 05:25:53,259 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 05:25:53,259 INFO L93 Difference]: Finished difference Result 28653 states and 41229 transitions. [2023-04-02 05:25:53,260 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-04-02 05:25:53,260 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 6.476190476190476) internal successors, (136), 21 states have internal predecessors, (136), 4 states have call successors, (20), 15 states have call predecessors, (20), 15 states have return successors, (19), 4 states have call predecessors, (19), 3 states have call successors, (19) Word has length 193 [2023-04-02 05:25:53,260 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 05:25:53,313 INFO L225 Difference]: With dead ends: 28653 [2023-04-02 05:25:53,313 INFO L226 Difference]: Without dead ends: 23079 [2023-04-02 05:25:53,325 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 256 GetRequests, 212 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 510 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=226, Invalid=1844, Unknown=0, NotChecked=0, Total=2070 [2023-04-02 05:25:53,325 INFO L413 NwaCegarLoop]: 73 mSDtfsCounter, 2689 mSDsluCounter, 1009 mSDsCounter, 0 mSdLazyCounter, 4121 mSolverCounterSat, 189 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2695 SdHoareTripleChecker+Valid, 1082 SdHoareTripleChecker+Invalid, 4310 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 189 IncrementalHoareTripleChecker+Valid, 4121 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2023-04-02 05:25:53,326 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2695 Valid, 1082 Invalid, 4310 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [189 Valid, 4121 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2023-04-02 05:25:53,340 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23079 states. [2023-04-02 05:25:59,472 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23079 to 23063. [2023-04-02 05:25:59,488 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23063 states, 17577 states have (on average 1.455595380326563) internal successors, (25585), 17922 states have internal predecessors, (25585), 2571 states have call successors, (2571), 2571 states have call predecessors, (2571), 2914 states have return successors, (5079), 2569 states have call predecessors, (5079), 2570 states have call successors, (5079) [2023-04-02 05:25:59,529 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23063 states to 23063 states and 33235 transitions. [2023-04-02 05:25:59,531 INFO L78 Accepts]: Start accepts. Automaton has 23063 states and 33235 transitions. Word has length 193 [2023-04-02 05:25:59,531 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 05:25:59,531 INFO L495 AbstractCegarLoop]: Abstraction has 23063 states and 33235 transitions. [2023-04-02 05:25:59,531 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 6.476190476190476) internal successors, (136), 21 states have internal predecessors, (136), 4 states have call successors, (20), 15 states have call predecessors, (20), 15 states have return successors, (19), 4 states have call predecessors, (19), 3 states have call successors, (19) [2023-04-02 05:25:59,531 INFO L276 IsEmpty]: Start isEmpty. Operand 23063 states and 33235 transitions. [2023-04-02 05:25:59,535 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 194 [2023-04-02 05:25:59,535 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 05:25:59,535 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 05:25:59,552 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-04-02 05:25:59,742 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2023-04-02 05:25:59,743 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 05:25:59,743 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 05:25:59,743 INFO L85 PathProgramCache]: Analyzing trace with hash -313599629, now seen corresponding path program 1 times [2023-04-02 05:25:59,743 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 05:25:59,743 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [335864801] [2023-04-02 05:25:59,743 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 05:25:59,743 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 05:25:59,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:26:00,296 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 05:26:00,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:26:00,304 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-04-02 05:26:00,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:26:00,330 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2023-04-02 05:26:00,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:26:00,343 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-04-02 05:26:00,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:26:00,356 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2023-04-02 05:26:00,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:26:00,369 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2023-04-02 05:26:00,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:26:00,383 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2023-04-02 05:26:00,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:26:00,399 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2023-04-02 05:26:00,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:26:00,425 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2023-04-02 05:26:00,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:26:00,442 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2023-04-02 05:26:00,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:26:00,459 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2023-04-02 05:26:00,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:26:00,464 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2023-04-02 05:26:00,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:26:00,478 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2023-04-02 05:26:00,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:26:00,481 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2023-04-02 05:26:00,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:26:00,498 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2023-04-02 05:26:00,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:26:00,516 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2023-04-02 05:26:00,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:26:00,534 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2023-04-02 05:26:00,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:26:00,552 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2023-04-02 05:26:00,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:26:00,566 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 166 [2023-04-02 05:26:00,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:26:00,584 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 171 [2023-04-02 05:26:00,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:26:00,603 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 176 [2023-04-02 05:26:00,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:26:00,623 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 182 [2023-04-02 05:26:00,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:26:00,640 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 30 proven. 12 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-04-02 05:26:00,641 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 05:26:00,641 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [335864801] [2023-04-02 05:26:00,641 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [335864801] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-02 05:26:00,641 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1398454085] [2023-04-02 05:26:00,641 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 05:26:00,641 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 05:26:00,641 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-02 05:26:00,642 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-02 05:26:00,644 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-04-02 05:26:00,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:26:00,888 INFO L262 TraceCheckSpWp]: Trace formula consists of 1444 conjuncts, 37 conjunts are in the unsatisfiable core [2023-04-02 05:26:00,986 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-02 05:26:02,983 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-04-02 05:26:02,983 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-04-02 05:26:02,983 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1398454085] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 05:26:02,983 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-04-02 05:26:02,983 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [25] total 43 [2023-04-02 05:26:02,983 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2135326092] [2023-04-02 05:26:02,983 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 05:26:02,984 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-04-02 05:26:02,985 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 05:26:02,986 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-04-02 05:26:02,986 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=180, Invalid=1626, Unknown=0, NotChecked=0, Total=1806 [2023-04-02 05:26:02,986 INFO L87 Difference]: Start difference. First operand 23063 states and 33235 transitions. Second operand has 20 states, 20 states have (on average 6.65) internal successors, (133), 20 states have internal predecessors, (133), 4 states have call successors, (19), 14 states have call predecessors, (19), 14 states have return successors, (18), 4 states have call predecessors, (18), 3 states have call successors, (18) [2023-04-02 05:26:12,147 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 05:26:12,148 INFO L93 Difference]: Finished difference Result 35324 states and 50875 transitions. [2023-04-02 05:26:12,148 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-04-02 05:26:12,148 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 6.65) internal successors, (133), 20 states have internal predecessors, (133), 4 states have call successors, (19), 14 states have call predecessors, (19), 14 states have return successors, (18), 4 states have call predecessors, (18), 3 states have call successors, (18) Word has length 193 [2023-04-02 05:26:12,148 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 05:26:12,238 INFO L225 Difference]: With dead ends: 35324 [2023-04-02 05:26:12,239 INFO L226 Difference]: Without dead ends: 26879 [2023-04-02 05:26:12,258 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 256 GetRequests, 213 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 479 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=219, Invalid=1761, Unknown=0, NotChecked=0, Total=1980 [2023-04-02 05:26:12,258 INFO L413 NwaCegarLoop]: 70 mSDtfsCounter, 2322 mSDsluCounter, 1254 mSDsCounter, 0 mSdLazyCounter, 3756 mSolverCounterSat, 164 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2328 SdHoareTripleChecker+Valid, 1324 SdHoareTripleChecker+Invalid, 3920 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 164 IncrementalHoareTripleChecker+Valid, 3756 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2023-04-02 05:26:12,258 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2328 Valid, 1324 Invalid, 3920 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [164 Valid, 3756 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2023-04-02 05:26:12,277 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26879 states.