/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-reduced/pals_lcr.7.ufo.BOUNDED-14.pals.c.v+cfa-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-f954360 [2023-04-02 06:43:56,483 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-04-02 06:43:56,485 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-04-02 06:43:56,519 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-04-02 06:43:56,519 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-04-02 06:43:56,520 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-04-02 06:43:56,521 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-04-02 06:43:56,522 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-04-02 06:43:56,523 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-04-02 06:43:56,524 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-04-02 06:43:56,525 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-04-02 06:43:56,525 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-04-02 06:43:56,526 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-04-02 06:43:56,527 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-04-02 06:43:56,527 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-04-02 06:43:56,528 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-04-02 06:43:56,529 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-04-02 06:43:56,530 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-04-02 06:43:56,531 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-04-02 06:43:56,532 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-04-02 06:43:56,534 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-04-02 06:43:56,536 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-04-02 06:43:56,537 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-04-02 06:43:56,538 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-04-02 06:43:56,541 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2023-04-02 06:43:56,543 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-04-02 06:43:56,544 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-04-02 06:43:56,544 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-04-02 06:43:56,545 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-04-02 06:43:56,549 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-04-02 06:43:56,549 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-04-02 06:43:56,550 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-04-02 06:43:56,550 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-04-02 06:43:56,550 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-04-02 06:43:56,553 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-04-02 06:43:56,553 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-04-02 06:43:56,555 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 06:43:56,584 INFO L113 SettingsManager]: Loading preferences was successful [2023-04-02 06:43:56,585 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-04-02 06:43:56,585 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-04-02 06:43:56,585 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-04-02 06:43:56,586 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-04-02 06:43:56,586 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-04-02 06:43:56,586 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-04-02 06:43:56,587 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-04-02 06:43:56,587 INFO L138 SettingsManager]: * Use SBE=true [2023-04-02 06:43:56,587 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-04-02 06:43:56,587 INFO L138 SettingsManager]: * sizeof long=4 [2023-04-02 06:43:56,587 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-04-02 06:43:56,587 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-04-02 06:43:56,587 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-04-02 06:43:56,587 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-04-02 06:43:56,588 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-04-02 06:43:56,588 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-04-02 06:43:56,588 INFO L138 SettingsManager]: * sizeof long double=12 [2023-04-02 06:43:56,588 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-04-02 06:43:56,588 INFO L138 SettingsManager]: * Use constant arrays=true [2023-04-02 06:43:56,588 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-04-02 06:43:56,588 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-04-02 06:43:56,588 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-04-02 06:43:56,589 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-04-02 06:43:56,589 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-02 06:43:56,589 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-04-02 06:43:56,589 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-04-02 06:43:56,589 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-04-02 06:43:56,589 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-04-02 06:43:56,589 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-04-02 06:43:56,590 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-04-02 06:43:56,590 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-04-02 06:43:56,590 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-04-02 06:43:56,590 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-04-02 06:43:56,590 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-04-02 06:43:56,590 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-04-02 06:43:56,841 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-04-02 06:43:56,868 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-04-02 06:43:56,872 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-04-02 06:43:56,873 INFO L271 PluginConnector]: Initializing CDTParser... [2023-04-02 06:43:56,873 INFO L275 PluginConnector]: CDTParser initialized [2023-04-02 06:43:56,874 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.7.ufo.BOUNDED-14.pals.c.v+cfa-reducer.c [2023-04-02 06:43:58,073 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-04-02 06:43:58,289 INFO L351 CDTParser]: Found 1 translation units. [2023-04-02 06:43:58,290 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.7.ufo.BOUNDED-14.pals.c.v+cfa-reducer.c [2023-04-02 06:43:58,299 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/92de3f81d/e6eef4b9f5cc44c4bdbbe0902caa5c4c/FLAGc0bd3a87b [2023-04-02 06:43:58,312 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/92de3f81d/e6eef4b9f5cc44c4bdbbe0902caa5c4c [2023-04-02 06:43:58,314 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-04-02 06:43:58,315 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2023-04-02 06:43:58,316 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-04-02 06:43:58,316 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-04-02 06:43:58,320 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-04-02 06:43:58,321 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.04 06:43:58" (1/1) ... [2023-04-02 06:43:58,322 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@37427962 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 06:43:58, skipping insertion in model container [2023-04-02 06:43:58,322 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.04 06:43:58" (1/1) ... [2023-04-02 06:43:58,329 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-04-02 06:43:58,382 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-04-02 06:43:58,619 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-reduced/pals_lcr.7.ufo.BOUNDED-14.pals.c.v+cfa-reducer.c[7631,7644] [2023-04-02 06:43:58,647 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-02 06:43:58,668 INFO L203 MainTranslator]: Completed pre-run [2023-04-02 06:43:58,722 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-reduced/pals_lcr.7.ufo.BOUNDED-14.pals.c.v+cfa-reducer.c[7631,7644] [2023-04-02 06:43:58,762 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-02 06:43:58,780 INFO L208 MainTranslator]: Completed translation [2023-04-02 06:43:58,780 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 06:43:58 WrapperNode [2023-04-02 06:43:58,781 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-04-02 06:43:58,782 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-04-02 06:43:58,782 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-04-02 06:43:58,782 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-04-02 06:43:58,791 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 06:43:58" (1/1) ... [2023-04-02 06:43:58,791 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 06:43:58" (1/1) ... [2023-04-02 06:43:58,800 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 06:43:58" (1/1) ... [2023-04-02 06:43:58,801 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 06:43:58" (1/1) ... [2023-04-02 06:43:58,824 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 06:43:58" (1/1) ... [2023-04-02 06:43:58,830 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 06:43:58" (1/1) ... [2023-04-02 06:43:58,848 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 06:43:58" (1/1) ... [2023-04-02 06:43:58,851 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 06:43:58" (1/1) ... [2023-04-02 06:43:58,855 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-04-02 06:43:58,856 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-04-02 06:43:58,856 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-04-02 06:43:58,856 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-04-02 06:43:58,857 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 06:43:58" (1/1) ... [2023-04-02 06:43:58,866 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-02 06:43:58,878 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-02 06:43:58,898 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 06:43:58,925 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 06:43:58,944 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2023-04-02 06:43:58,945 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-04-02 06:43:58,947 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2023-04-02 06:43:58,947 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-04-02 06:43:58,947 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2023-04-02 06:43:58,948 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2023-04-02 06:43:58,948 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2023-04-02 06:43:58,948 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2023-04-02 06:43:58,948 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-04-02 06:43:58,948 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2023-04-02 06:43:58,948 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2023-04-02 06:43:58,948 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2023-04-02 06:43:58,949 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-04-02 06:43:58,949 INFO L130 BoogieDeclarations]: Found specification of procedure read [2023-04-02 06:43:58,949 INFO L130 BoogieDeclarations]: Found specification of procedure write [2023-04-02 06:43:58,949 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2023-04-02 06:43:58,949 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2023-04-02 06:43:58,949 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2023-04-02 06:43:58,949 INFO L130 BoogieDeclarations]: Found specification of procedure node4 [2023-04-02 06:43:58,949 INFO L130 BoogieDeclarations]: Found specification of procedure node5 [2023-04-02 06:43:58,949 INFO L130 BoogieDeclarations]: Found specification of procedure node6 [2023-04-02 06:43:58,949 INFO L130 BoogieDeclarations]: Found specification of procedure node7 [2023-04-02 06:43:58,950 INFO L130 BoogieDeclarations]: Found specification of procedure init [2023-04-02 06:43:58,950 INFO L130 BoogieDeclarations]: Found specification of procedure check [2023-04-02 06:43:58,950 INFO L130 BoogieDeclarations]: Found specification of procedure main [2023-04-02 06:43:58,950 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2023-04-02 06:43:58,950 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-04-02 06:43:58,950 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-04-02 06:43:58,950 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-04-02 06:43:58,950 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-04-02 06:43:58,950 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-04-02 06:43:59,067 INFO L236 CfgBuilder]: Building ICFG [2023-04-02 06:43:59,069 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-04-02 06:43:59,713 INFO L277 CfgBuilder]: Performing block encoding [2023-04-02 06:43:59,725 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-04-02 06:43:59,725 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-04-02 06:43:59,730 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.04 06:43:59 BoogieIcfgContainer [2023-04-02 06:43:59,730 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-04-02 06:43:59,735 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-04-02 06:43:59,735 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-04-02 06:43:59,738 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-04-02 06:43:59,739 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.04 06:43:58" (1/3) ... [2023-04-02 06:43:59,739 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@33d53066 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.04 06:43:59, skipping insertion in model container [2023-04-02 06:43:59,739 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 06:43:58" (2/3) ... [2023-04-02 06:43:59,739 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@33d53066 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.04 06:43:59, skipping insertion in model container [2023-04-02 06:43:59,740 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.04 06:43:59" (3/3) ... [2023-04-02 06:43:59,741 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_lcr.7.ufo.BOUNDED-14.pals.c.v+cfa-reducer.c [2023-04-02 06:43:59,759 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-04-02 06:43:59,759 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-04-02 06:43:59,816 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-04-02 06:43:59,822 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;@79b7f4b1, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-04-02 06:43:59,822 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-04-02 06:43:59,827 INFO L276 IsEmpty]: Start isEmpty. Operand has 142 states, 135 states have (on average 1.7481481481481482) internal successors, (236), 137 states have internal predecessors, (236), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-04-02 06:43:59,840 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2023-04-02 06:43:59,840 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:43:59,841 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] [2023-04-02 06:43:59,842 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 06:43:59,846 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:43:59,846 INFO L85 PathProgramCache]: Analyzing trace with hash -691215733, now seen corresponding path program 1 times [2023-04-02 06:43:59,855 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:43:59,856 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1888040375] [2023-04-02 06:43:59,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:43:59,857 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:44:00,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:44:00,585 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:44:00,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:44:00,627 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 06:44:00,627 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:44:00,627 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1888040375] [2023-04-02 06:44:00,628 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1888040375] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:44:00,628 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:44:00,628 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-04-02 06:44:00,629 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1452698682] [2023-04-02 06:44:00,630 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:44:00,635 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-04-02 06:44:00,635 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:44:00,673 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-04-02 06:44:00,674 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-04-02 06:44:00,679 INFO L87 Difference]: Start difference. First operand has 142 states, 135 states have (on average 1.7481481481481482) internal successors, (236), 137 states have internal predecessors, (236), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand has 4 states, 4 states have (on average 21.75) internal successors, (87), 3 states have internal predecessors, (87), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:44:01,743 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:44:01,744 INFO L93 Difference]: Finished difference Result 304 states and 491 transitions. [2023-04-02 06:44:01,745 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-04-02 06:44:01,746 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 21.75) internal successors, (87), 3 states have internal predecessors, (87), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 90 [2023-04-02 06:44:01,747 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:44:01,758 INFO L225 Difference]: With dead ends: 304 [2023-04-02 06:44:01,758 INFO L226 Difference]: Without dead ends: 207 [2023-04-02 06:44:01,762 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-04-02 06:44:01,765 INFO L413 NwaCegarLoop]: 350 mSDtfsCounter, 170 mSDsluCounter, 135 mSDsCounter, 0 mSdLazyCounter, 354 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 170 SdHoareTripleChecker+Valid, 485 SdHoareTripleChecker+Invalid, 358 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 354 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-04-02 06:44:01,766 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [170 Valid, 485 Invalid, 358 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 354 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-04-02 06:44:01,782 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 207 states. [2023-04-02 06:44:01,817 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 207 to 205. [2023-04-02 06:44:01,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 205 states, 201 states have (on average 1.427860696517413) internal successors, (287), 201 states have internal predecessors, (287), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:44:01,821 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 205 states to 205 states and 290 transitions. [2023-04-02 06:44:01,822 INFO L78 Accepts]: Start accepts. Automaton has 205 states and 290 transitions. Word has length 90 [2023-04-02 06:44:01,822 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:44:01,823 INFO L495 AbstractCegarLoop]: Abstraction has 205 states and 290 transitions. [2023-04-02 06:44:01,823 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 21.75) internal successors, (87), 3 states have internal predecessors, (87), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:44:01,823 INFO L276 IsEmpty]: Start isEmpty. Operand 205 states and 290 transitions. [2023-04-02 06:44:01,825 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2023-04-02 06:44:01,825 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:44:01,826 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] [2023-04-02 06:44:01,826 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-04-02 06:44:01,826 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 06:44:01,827 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:44:01,827 INFO L85 PathProgramCache]: Analyzing trace with hash -1653238891, now seen corresponding path program 1 times [2023-04-02 06:44:01,827 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:44:01,827 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1576009507] [2023-04-02 06:44:01,827 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:44:01,827 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:44:01,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:44:02,152 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:44:02,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:44:02,172 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 06:44:02,173 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:44:02,173 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1576009507] [2023-04-02 06:44:02,173 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1576009507] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:44:02,174 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:44:02,174 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-04-02 06:44:02,174 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [698222277] [2023-04-02 06:44:02,174 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:44:02,175 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-04-02 06:44:02,175 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:44:02,176 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-04-02 06:44:02,176 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-04-02 06:44:02,177 INFO L87 Difference]: Start difference. First operand 205 states and 290 transitions. Second operand has 4 states, 4 states have (on average 22.0) internal successors, (88), 3 states have internal predecessors, (88), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:44:02,944 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:44:02,944 INFO L93 Difference]: Finished difference Result 485 states and 730 transitions. [2023-04-02 06:44:02,949 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-04-02 06:44:02,950 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 22.0) internal successors, (88), 3 states have internal predecessors, (88), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 91 [2023-04-02 06:44:02,954 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:44:02,961 INFO L225 Difference]: With dead ends: 485 [2023-04-02 06:44:02,962 INFO L226 Difference]: Without dead ends: 337 [2023-04-02 06:44:02,967 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-04-02 06:44:02,968 INFO L413 NwaCegarLoop]: 278 mSDtfsCounter, 112 mSDsluCounter, 125 mSDsCounter, 0 mSdLazyCounter, 284 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 112 SdHoareTripleChecker+Valid, 403 SdHoareTripleChecker+Invalid, 288 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 284 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-04-02 06:44:02,968 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [112 Valid, 403 Invalid, 288 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 284 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-04-02 06:44:02,969 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 337 states. [2023-04-02 06:44:03,019 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 337 to 335. [2023-04-02 06:44:03,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 335 states, 331 states have (on average 1.4833836858006042) internal successors, (491), 331 states have internal predecessors, (491), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:44:03,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 335 states to 335 states and 494 transitions. [2023-04-02 06:44:03,022 INFO L78 Accepts]: Start accepts. Automaton has 335 states and 494 transitions. Word has length 91 [2023-04-02 06:44:03,023 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:44:03,023 INFO L495 AbstractCegarLoop]: Abstraction has 335 states and 494 transitions. [2023-04-02 06:44:03,024 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 22.0) internal successors, (88), 3 states have internal predecessors, (88), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:44:03,024 INFO L276 IsEmpty]: Start isEmpty. Operand 335 states and 494 transitions. [2023-04-02 06:44:03,031 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2023-04-02 06:44:03,032 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:44:03,032 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] [2023-04-02 06:44:03,032 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-04-02 06:44:03,032 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 06:44:03,033 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:44:03,033 INFO L85 PathProgramCache]: Analyzing trace with hash -994834493, now seen corresponding path program 1 times [2023-04-02 06:44:03,033 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:44:03,033 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1625337406] [2023-04-02 06:44:03,033 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:44:03,034 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:44:03,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:44:03,338 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:44:03,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:44:03,370 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 06:44:03,371 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:44:03,371 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1625337406] [2023-04-02 06:44:03,371 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1625337406] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:44:03,372 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:44:03,372 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-04-02 06:44:03,372 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1332518478] [2023-04-02 06:44:03,373 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:44:03,374 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-04-02 06:44:03,374 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:44:03,374 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-04-02 06:44:03,375 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-04-02 06:44:03,375 INFO L87 Difference]: Start difference. First operand 335 states and 494 transitions. Second operand has 4 states, 4 states have (on average 22.25) internal successors, (89), 3 states have internal predecessors, (89), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:44:04,063 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:44:04,063 INFO L93 Difference]: Finished difference Result 859 states and 1316 transitions. [2023-04-02 06:44:04,064 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-04-02 06:44:04,064 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 22.25) internal successors, (89), 3 states have internal predecessors, (89), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 92 [2023-04-02 06:44:04,065 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:44:04,068 INFO L225 Difference]: With dead ends: 859 [2023-04-02 06:44:04,068 INFO L226 Difference]: Without dead ends: 581 [2023-04-02 06:44:04,072 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-04-02 06:44:04,075 INFO L413 NwaCegarLoop]: 270 mSDtfsCounter, 107 mSDsluCounter, 129 mSDsCounter, 0 mSdLazyCounter, 276 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 107 SdHoareTripleChecker+Valid, 399 SdHoareTripleChecker+Invalid, 280 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 276 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-04-02 06:44:04,076 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [107 Valid, 399 Invalid, 280 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 276 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-04-02 06:44:04,079 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 581 states. [2023-04-02 06:44:04,128 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 581 to 579. [2023-04-02 06:44:04,130 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 579 states, 575 states have (on average 1.5147826086956522) internal successors, (871), 575 states have internal predecessors, (871), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:44:04,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 579 states to 579 states and 874 transitions. [2023-04-02 06:44:04,132 INFO L78 Accepts]: Start accepts. Automaton has 579 states and 874 transitions. Word has length 92 [2023-04-02 06:44:04,133 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:44:04,133 INFO L495 AbstractCegarLoop]: Abstraction has 579 states and 874 transitions. [2023-04-02 06:44:04,134 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 22.25) internal successors, (89), 3 states have internal predecessors, (89), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:44:04,134 INFO L276 IsEmpty]: Start isEmpty. Operand 579 states and 874 transitions. [2023-04-02 06:44:04,139 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2023-04-02 06:44:04,139 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:44:04,139 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] [2023-04-02 06:44:04,139 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-04-02 06:44:04,141 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 06:44:04,141 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:44:04,141 INFO L85 PathProgramCache]: Analyzing trace with hash 1063947070, now seen corresponding path program 1 times [2023-04-02 06:44:04,142 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:44:04,142 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1507229604] [2023-04-02 06:44:04,142 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:44:04,142 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:44:04,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:44:04,431 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:44:04,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:44:04,450 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 06:44:04,450 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:44:04,450 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1507229604] [2023-04-02 06:44:04,450 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1507229604] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:44:04,450 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:44:04,450 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-04-02 06:44:04,451 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1163023938] [2023-04-02 06:44:04,451 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:44:04,451 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-04-02 06:44:04,451 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:44:04,452 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-04-02 06:44:04,452 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-04-02 06:44:04,452 INFO L87 Difference]: Start difference. First operand 579 states and 874 transitions. Second operand has 4 states, 4 states have (on average 22.5) internal successors, (90), 3 states have internal predecessors, (90), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:44:05,167 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:44:05,167 INFO L93 Difference]: Finished difference Result 1559 states and 2404 transitions. [2023-04-02 06:44:05,167 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-04-02 06:44:05,167 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 22.5) internal successors, (90), 3 states have internal predecessors, (90), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 93 [2023-04-02 06:44:05,169 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:44:05,174 INFO L225 Difference]: With dead ends: 1559 [2023-04-02 06:44:05,174 INFO L226 Difference]: Without dead ends: 1037 [2023-04-02 06:44:05,175 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-04-02 06:44:05,182 INFO L413 NwaCegarLoop]: 262 mSDtfsCounter, 102 mSDsluCounter, 133 mSDsCounter, 0 mSdLazyCounter, 268 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 102 SdHoareTripleChecker+Valid, 395 SdHoareTripleChecker+Invalid, 272 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 268 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-04-02 06:44:05,183 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [102 Valid, 395 Invalid, 272 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 268 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-04-02 06:44:05,185 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1037 states. [2023-04-02 06:44:05,266 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1037 to 1035. [2023-04-02 06:44:05,268 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1035 states, 1031 states have (on average 1.527643064985451) internal successors, (1575), 1031 states have internal predecessors, (1575), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:44:05,272 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1035 states to 1035 states and 1578 transitions. [2023-04-02 06:44:05,272 INFO L78 Accepts]: Start accepts. Automaton has 1035 states and 1578 transitions. Word has length 93 [2023-04-02 06:44:05,272 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:44:05,272 INFO L495 AbstractCegarLoop]: Abstraction has 1035 states and 1578 transitions. [2023-04-02 06:44:05,272 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 22.5) internal successors, (90), 3 states have internal predecessors, (90), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:44:05,272 INFO L276 IsEmpty]: Start isEmpty. Operand 1035 states and 1578 transitions. [2023-04-02 06:44:05,273 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2023-04-02 06:44:05,273 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:44:05,273 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] [2023-04-02 06:44:05,273 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-04-02 06:44:05,274 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 06:44:05,274 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:44:05,274 INFO L85 PathProgramCache]: Analyzing trace with hash -1485155560, now seen corresponding path program 1 times [2023-04-02 06:44:05,274 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:44:05,274 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [384584205] [2023-04-02 06:44:05,274 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:44:05,274 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:44:05,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:44:05,508 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:44:05,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:44:05,522 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 06:44:05,523 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:44:05,523 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [384584205] [2023-04-02 06:44:05,523 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [384584205] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:44:05,523 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:44:05,524 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-04-02 06:44:05,527 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [277061592] [2023-04-02 06:44:05,527 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:44:05,529 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-04-02 06:44:05,529 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:44:05,529 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-04-02 06:44:05,529 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-04-02 06:44:05,529 INFO L87 Difference]: Start difference. First operand 1035 states and 1578 transitions. Second operand has 4 states, 4 states have (on average 22.75) internal successors, (91), 3 states have internal predecessors, (91), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:44:06,281 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:44:06,282 INFO L93 Difference]: Finished difference Result 2863 states and 4412 transitions. [2023-04-02 06:44:06,282 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-04-02 06:44:06,282 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 22.75) internal successors, (91), 3 states have internal predecessors, (91), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 94 [2023-04-02 06:44:06,282 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:44:06,290 INFO L225 Difference]: With dead ends: 2863 [2023-04-02 06:44:06,290 INFO L226 Difference]: Without dead ends: 1885 [2023-04-02 06:44:06,292 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-04-02 06:44:06,293 INFO L413 NwaCegarLoop]: 254 mSDtfsCounter, 97 mSDsluCounter, 137 mSDsCounter, 0 mSdLazyCounter, 260 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 97 SdHoareTripleChecker+Valid, 391 SdHoareTripleChecker+Invalid, 264 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 260 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-04-02 06:44:06,293 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [97 Valid, 391 Invalid, 264 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 260 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-04-02 06:44:06,295 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1885 states. [2023-04-02 06:44:06,483 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1885 to 1883. [2023-04-02 06:44:06,488 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1883 states, 1879 states have (on average 1.5279403938265035) internal successors, (2871), 1879 states have internal predecessors, (2871), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:44:06,494 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1883 states to 1883 states and 2874 transitions. [2023-04-02 06:44:06,495 INFO L78 Accepts]: Start accepts. Automaton has 1883 states and 2874 transitions. Word has length 94 [2023-04-02 06:44:06,496 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:44:06,496 INFO L495 AbstractCegarLoop]: Abstraction has 1883 states and 2874 transitions. [2023-04-02 06:44:06,496 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 22.75) internal successors, (91), 3 states have internal predecessors, (91), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:44:06,496 INFO L276 IsEmpty]: Start isEmpty. Operand 1883 states and 2874 transitions. [2023-04-02 06:44:06,497 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2023-04-02 06:44:06,497 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:44:06,497 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] [2023-04-02 06:44:06,497 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-04-02 06:44:06,497 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 06:44:06,498 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:44:06,498 INFO L85 PathProgramCache]: Analyzing trace with hash -1174120321, now seen corresponding path program 1 times [2023-04-02 06:44:06,498 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:44:06,498 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2042948285] [2023-04-02 06:44:06,499 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:44:06,499 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:44:06,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:44:06,743 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:44:06,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:44:06,757 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 06:44:06,757 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:44:06,757 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2042948285] [2023-04-02 06:44:06,757 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2042948285] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:44:06,757 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:44:06,757 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-04-02 06:44:06,758 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1009275710] [2023-04-02 06:44:06,758 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:44:06,758 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-04-02 06:44:06,758 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:44:06,759 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-04-02 06:44:06,759 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-04-02 06:44:06,759 INFO L87 Difference]: Start difference. First operand 1883 states and 2874 transitions. Second operand has 4 states, 4 states have (on average 23.0) internal successors, (92), 3 states have internal predecessors, (92), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:44:07,695 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:44:07,696 INFO L93 Difference]: Finished difference Result 5279 states and 8092 transitions. [2023-04-02 06:44:07,697 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-04-02 06:44:07,697 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 23.0) internal successors, (92), 3 states have internal predecessors, (92), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 95 [2023-04-02 06:44:07,697 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:44:07,711 INFO L225 Difference]: With dead ends: 5279 [2023-04-02 06:44:07,712 INFO L226 Difference]: Without dead ends: 3453 [2023-04-02 06:44:07,716 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-04-02 06:44:07,717 INFO L413 NwaCegarLoop]: 246 mSDtfsCounter, 92 mSDsluCounter, 141 mSDsCounter, 0 mSdLazyCounter, 252 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 92 SdHoareTripleChecker+Valid, 387 SdHoareTripleChecker+Invalid, 256 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 252 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-04-02 06:44:07,717 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [92 Valid, 387 Invalid, 256 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 252 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-04-02 06:44:07,723 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3453 states. [2023-04-02 06:44:07,962 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3453 to 3451. [2023-04-02 06:44:07,970 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3451 states, 3447 states have (on average 1.5198723527705251) internal successors, (5239), 3447 states have internal predecessors, (5239), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:44:07,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3451 states to 3451 states and 5242 transitions. [2023-04-02 06:44:07,985 INFO L78 Accepts]: Start accepts. Automaton has 3451 states and 5242 transitions. Word has length 95 [2023-04-02 06:44:07,985 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:44:07,985 INFO L495 AbstractCegarLoop]: Abstraction has 3451 states and 5242 transitions. [2023-04-02 06:44:07,985 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 23.0) internal successors, (92), 3 states have internal predecessors, (92), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:44:07,986 INFO L276 IsEmpty]: Start isEmpty. Operand 3451 states and 5242 transitions. [2023-04-02 06:44:07,986 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2023-04-02 06:44:07,986 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:44:07,986 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] [2023-04-02 06:44:07,987 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-04-02 06:44:07,987 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 06:44:07,987 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:44:07,987 INFO L85 PathProgramCache]: Analyzing trace with hash 516753514, now seen corresponding path program 1 times [2023-04-02 06:44:07,987 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:44:07,987 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [733161512] [2023-04-02 06:44:07,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:44:07,988 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:44:08,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:44:08,250 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:44:08,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:44:08,262 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 06:44:08,262 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:44:08,262 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [733161512] [2023-04-02 06:44:08,262 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [733161512] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:44:08,262 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:44:08,262 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-04-02 06:44:08,262 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [857486784] [2023-04-02 06:44:08,263 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:44:08,263 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-04-02 06:44:08,263 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:44:08,263 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-04-02 06:44:08,264 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-04-02 06:44:08,264 INFO L87 Difference]: Start difference. First operand 3451 states and 5242 transitions. Second operand has 4 states, 4 states have (on average 23.25) internal successors, (93), 3 states have internal predecessors, (93), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:44:09,306 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:44:09,306 INFO L93 Difference]: Finished difference Result 9727 states and 14780 transitions. [2023-04-02 06:44:09,307 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-04-02 06:44:09,307 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 23.25) internal successors, (93), 3 states have internal predecessors, (93), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 96 [2023-04-02 06:44:09,307 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:44:09,333 INFO L225 Difference]: With dead ends: 9727 [2023-04-02 06:44:09,334 INFO L226 Difference]: Without dead ends: 6333 [2023-04-02 06:44:09,341 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-04-02 06:44:09,342 INFO L413 NwaCegarLoop]: 238 mSDtfsCounter, 87 mSDsluCounter, 145 mSDsCounter, 0 mSdLazyCounter, 244 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 87 SdHoareTripleChecker+Valid, 383 SdHoareTripleChecker+Invalid, 248 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 244 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-04-02 06:44:09,342 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [87 Valid, 383 Invalid, 248 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 244 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-04-02 06:44:09,349 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6333 states. [2023-04-02 06:44:09,803 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6333 to 6331. [2023-04-02 06:44:09,816 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6331 states, 6327 states have (on average 1.5057689268215584) internal successors, (9527), 6327 states have internal predecessors, (9527), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:44:09,843 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6331 states to 6331 states and 9530 transitions. [2023-04-02 06:44:09,844 INFO L78 Accepts]: Start accepts. Automaton has 6331 states and 9530 transitions. Word has length 96 [2023-04-02 06:44:09,844 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:44:09,844 INFO L495 AbstractCegarLoop]: Abstraction has 6331 states and 9530 transitions. [2023-04-02 06:44:09,844 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 23.25) internal successors, (93), 3 states have internal predecessors, (93), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:44:09,844 INFO L276 IsEmpty]: Start isEmpty. Operand 6331 states and 9530 transitions. [2023-04-02 06:44:09,845 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2023-04-02 06:44:09,845 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:44:09,845 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] [2023-04-02 06:44:09,845 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-04-02 06:44:09,845 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 06:44:09,846 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:44:09,846 INFO L85 PathProgramCache]: Analyzing trace with hash -1656355949, now seen corresponding path program 1 times [2023-04-02 06:44:09,846 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:44:09,846 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2122952326] [2023-04-02 06:44:09,846 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:44:09,846 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:44:09,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:44:10,309 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:44:10,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:44:10,321 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 06:44:10,321 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:44:10,322 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2122952326] [2023-04-02 06:44:10,322 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2122952326] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:44:10,322 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:44:10,322 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-04-02 06:44:10,322 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [267454468] [2023-04-02 06:44:10,322 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:44:10,322 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-04-02 06:44:10,322 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:44:10,323 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-04-02 06:44:10,323 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2023-04-02 06:44:10,323 INFO L87 Difference]: Start difference. First operand 6331 states and 9530 transitions. Second operand has 10 states, 10 states have (on average 9.4) internal successors, (94), 9 states have internal predecessors, (94), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:44:17,905 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:44:17,905 INFO L93 Difference]: Finished difference Result 94167 states and 142152 transitions. [2023-04-02 06:44:17,906 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-04-02 06:44:17,906 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 9.4) internal successors, (94), 9 states have internal predecessors, (94), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 97 [2023-04-02 06:44:17,906 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:44:18,175 INFO L225 Difference]: With dead ends: 94167 [2023-04-02 06:44:18,176 INFO L226 Difference]: Without dead ends: 87893 [2023-04-02 06:44:18,216 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 51 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=147, Invalid=315, Unknown=0, NotChecked=0, Total=462 [2023-04-02 06:44:18,217 INFO L413 NwaCegarLoop]: 176 mSDtfsCounter, 2426 mSDsluCounter, 3725 mSDsCounter, 0 mSdLazyCounter, 350 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2426 SdHoareTripleChecker+Valid, 3901 SdHoareTripleChecker+Invalid, 373 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 350 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-04-02 06:44:18,218 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2426 Valid, 3901 Invalid, 373 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 350 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-04-02 06:44:18,320 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87893 states. [2023-04-02 06:44:21,231 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87893 to 12603. [2023-04-02 06:44:21,255 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12603 states, 12599 states have (on average 1.4978172870862767) internal successors, (18871), 12599 states have internal predecessors, (18871), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:44:21,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12603 states to 12603 states and 18874 transitions. [2023-04-02 06:44:21,286 INFO L78 Accepts]: Start accepts. Automaton has 12603 states and 18874 transitions. Word has length 97 [2023-04-02 06:44:21,286 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:44:21,286 INFO L495 AbstractCegarLoop]: Abstraction has 12603 states and 18874 transitions. [2023-04-02 06:44:21,286 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.4) internal successors, (94), 9 states have internal predecessors, (94), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:44:21,286 INFO L276 IsEmpty]: Start isEmpty. Operand 12603 states and 18874 transitions. [2023-04-02 06:44:21,287 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2023-04-02 06:44:21,287 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:44:21,287 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] [2023-04-02 06:44:21,287 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-04-02 06:44:21,287 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 06:44:21,288 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:44:21,288 INFO L85 PathProgramCache]: Analyzing trace with hash 781610702, now seen corresponding path program 1 times [2023-04-02 06:44:21,288 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:44:21,288 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1339383229] [2023-04-02 06:44:21,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:44:21,288 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:44:21,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:44:21,545 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:44:21,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:44:21,561 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 06:44:21,561 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:44:21,561 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1339383229] [2023-04-02 06:44:21,561 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1339383229] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:44:21,561 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:44:21,562 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-04-02 06:44:21,562 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [687287601] [2023-04-02 06:44:21,562 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:44:21,562 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-04-02 06:44:21,562 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:44:21,563 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-04-02 06:44:21,563 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-04-02 06:44:21,563 INFO L87 Difference]: Start difference. First operand 12603 states and 18874 transitions. Second operand has 4 states, 4 states have (on average 24.0) internal successors, (96), 3 states have internal predecessors, (96), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:44:24,423 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:44:24,423 INFO L93 Difference]: Finished difference Result 31361 states and 47038 transitions. [2023-04-02 06:44:24,424 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-04-02 06:44:24,424 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 24.0) internal successors, (96), 3 states have internal predecessors, (96), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 99 [2023-04-02 06:44:24,424 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:44:24,461 INFO L225 Difference]: With dead ends: 31361 [2023-04-02 06:44:24,461 INFO L226 Difference]: Without dead ends: 18815 [2023-04-02 06:44:24,485 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-04-02 06:44:24,486 INFO L413 NwaCegarLoop]: 225 mSDtfsCounter, 81 mSDsluCounter, 122 mSDsCounter, 0 mSdLazyCounter, 237 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 81 SdHoareTripleChecker+Valid, 347 SdHoareTripleChecker+Invalid, 239 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 237 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-04-02 06:44:24,486 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [81 Valid, 347 Invalid, 239 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 237 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-04-02 06:44:24,500 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18815 states. [2023-04-02 06:44:27,370 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18815 to 18813. [2023-04-02 06:44:27,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18813 states, 18809 states have (on average 1.4933808283268648) internal successors, (28089), 18809 states have internal predecessors, (28089), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:44:27,439 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18813 states to 18813 states and 28092 transitions. [2023-04-02 06:44:27,439 INFO L78 Accepts]: Start accepts. Automaton has 18813 states and 28092 transitions. Word has length 99 [2023-04-02 06:44:27,439 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:44:27,439 INFO L495 AbstractCegarLoop]: Abstraction has 18813 states and 28092 transitions. [2023-04-02 06:44:27,440 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 24.0) internal successors, (96), 3 states have internal predecessors, (96), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:44:27,440 INFO L276 IsEmpty]: Start isEmpty. Operand 18813 states and 28092 transitions. [2023-04-02 06:44:27,441 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2023-04-02 06:44:27,441 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:44:27,441 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] [2023-04-02 06:44:27,441 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-04-02 06:44:27,441 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 06:44:27,442 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:44:27,442 INFO L85 PathProgramCache]: Analyzing trace with hash 801660045, now seen corresponding path program 1 times [2023-04-02 06:44:27,442 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:44:27,442 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [492409769] [2023-04-02 06:44:27,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:44:27,442 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:44:27,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:44:28,027 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:44:28,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:44:28,040 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 06:44:28,041 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:44:28,041 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [492409769] [2023-04-02 06:44:28,041 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [492409769] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:44:28,041 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:44:28,041 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-04-02 06:44:28,041 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [578324102] [2023-04-02 06:44:28,041 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:44:28,042 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-04-02 06:44:28,042 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:44:28,042 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-04-02 06:44:28,042 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2023-04-02 06:44:28,042 INFO L87 Difference]: Start difference. First operand 18813 states and 28092 transitions. Second operand has 10 states, 10 states have (on average 9.6) internal successors, (96), 9 states have internal predecessors, (96), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:44:30,993 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:44:30,993 INFO L93 Difference]: Finished difference Result 37569 states and 56126 transitions. [2023-04-02 06:44:30,994 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-04-02 06:44:30,994 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 9.6) internal successors, (96), 9 states have internal predecessors, (96), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 99 [2023-04-02 06:44:30,994 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:44:31,042 INFO L225 Difference]: With dead ends: 37569 [2023-04-02 06:44:31,042 INFO L226 Difference]: Without dead ends: 18815 [2023-04-02 06:44:31,084 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=83, Invalid=157, Unknown=0, NotChecked=0, Total=240 [2023-04-02 06:44:31,084 INFO L413 NwaCegarLoop]: 171 mSDtfsCounter, 296 mSDsluCounter, 754 mSDsCounter, 0 mSdLazyCounter, 273 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 296 SdHoareTripleChecker+Valid, 925 SdHoareTripleChecker+Invalid, 284 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 273 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-04-02 06:44:31,085 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [296 Valid, 925 Invalid, 284 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 273 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-04-02 06:44:31,101 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18815 states. [2023-04-02 06:44:33,682 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18815 to 18813. [2023-04-02 06:44:33,700 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18813 states, 18809 states have (on average 1.483172949120102) internal successors, (27897), 18809 states have internal predecessors, (27897), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:44:33,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18813 states to 18813 states and 27900 transitions. [2023-04-02 06:44:33,741 INFO L78 Accepts]: Start accepts. Automaton has 18813 states and 27900 transitions. Word has length 99 [2023-04-02 06:44:33,741 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:44:33,741 INFO L495 AbstractCegarLoop]: Abstraction has 18813 states and 27900 transitions. [2023-04-02 06:44:33,741 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.6) internal successors, (96), 9 states have internal predecessors, (96), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:44:33,741 INFO L276 IsEmpty]: Start isEmpty. Operand 18813 states and 27900 transitions. [2023-04-02 06:44:33,742 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2023-04-02 06:44:33,742 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:44:33,742 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] [2023-04-02 06:44:33,742 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-04-02 06:44:33,742 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 06:44:33,743 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:44:33,743 INFO L85 PathProgramCache]: Analyzing trace with hash -920251653, now seen corresponding path program 1 times [2023-04-02 06:44:33,743 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:44:33,743 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1239974390] [2023-04-02 06:44:33,743 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:44:33,743 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:44:33,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:44:34,041 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:44:34,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:44:34,062 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 06:44:34,063 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:44:34,063 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1239974390] [2023-04-02 06:44:34,063 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1239974390] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:44:34,063 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:44:34,063 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-04-02 06:44:34,063 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1686012040] [2023-04-02 06:44:34,063 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:44:34,063 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-04-02 06:44:34,064 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:44:34,064 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-04-02 06:44:34,064 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-04-02 06:44:34,065 INFO L87 Difference]: Start difference. First operand 18813 states and 27900 transitions. Second operand has 6 states, 5 states have (on average 19.4) internal successors, (97), 4 states have internal predecessors, (97), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:44:36,990 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:44:36,991 INFO L93 Difference]: Finished difference Result 37567 states and 55741 transitions. [2023-04-02 06:44:36,991 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-04-02 06:44:36,991 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 19.4) internal successors, (97), 4 states have internal predecessors, (97), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 100 [2023-04-02 06:44:36,991 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:44:37,034 INFO L225 Difference]: With dead ends: 37567 [2023-04-02 06:44:37,034 INFO L226 Difference]: Without dead ends: 18813 [2023-04-02 06:44:37,067 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2023-04-02 06:44:37,068 INFO L413 NwaCegarLoop]: 110 mSDtfsCounter, 453 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 249 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 453 SdHoareTripleChecker+Valid, 126 SdHoareTripleChecker+Invalid, 257 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 249 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-04-02 06:44:37,068 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [453 Valid, 126 Invalid, 257 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 249 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-04-02 06:44:37,084 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18813 states. [2023-04-02 06:44:39,650 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18813 to 18813. [2023-04-02 06:44:39,672 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18813 states, 18809 states have (on average 1.4729650699133394) internal successors, (27705), 18809 states have internal predecessors, (27705), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:44:39,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18813 states to 18813 states and 27708 transitions. [2023-04-02 06:44:39,717 INFO L78 Accepts]: Start accepts. Automaton has 18813 states and 27708 transitions. Word has length 100 [2023-04-02 06:44:39,717 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:44:39,717 INFO L495 AbstractCegarLoop]: Abstraction has 18813 states and 27708 transitions. [2023-04-02 06:44:39,718 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 19.4) internal successors, (97), 4 states have internal predecessors, (97), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:44:39,718 INFO L276 IsEmpty]: Start isEmpty. Operand 18813 states and 27708 transitions. [2023-04-02 06:44:39,718 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2023-04-02 06:44:39,718 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:44:39,719 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] [2023-04-02 06:44:39,719 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-04-02 06:44:39,719 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 06:44:39,719 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:44:39,719 INFO L85 PathProgramCache]: Analyzing trace with hash 1633298528, now seen corresponding path program 1 times [2023-04-02 06:44:39,719 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:44:39,719 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1479394671] [2023-04-02 06:44:39,719 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:44:39,720 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:44:39,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:44:40,013 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:44:40,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:44:40,038 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 06:44:40,038 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:44:40,039 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1479394671] [2023-04-02 06:44:40,039 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1479394671] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:44:40,039 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:44:40,039 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-04-02 06:44:40,039 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [518381647] [2023-04-02 06:44:40,039 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:44:40,039 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-04-02 06:44:40,039 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:44:40,040 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-04-02 06:44:40,040 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-04-02 06:44:40,040 INFO L87 Difference]: Start difference. First operand 18813 states and 27708 transitions. Second operand has 6 states, 5 states have (on average 19.4) internal successors, (97), 4 states have internal predecessors, (97), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:44:43,298 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:44:43,298 INFO L93 Difference]: Finished difference Result 37567 states and 55357 transitions. [2023-04-02 06:44:43,298 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-04-02 06:44:43,299 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 19.4) internal successors, (97), 4 states have internal predecessors, (97), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 100 [2023-04-02 06:44:43,299 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:44:43,337 INFO L225 Difference]: With dead ends: 37567 [2023-04-02 06:44:43,338 INFO L226 Difference]: Without dead ends: 18813 [2023-04-02 06:44:43,361 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2023-04-02 06:44:43,362 INFO L413 NwaCegarLoop]: 110 mSDtfsCounter, 437 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 247 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 437 SdHoareTripleChecker+Valid, 134 SdHoareTripleChecker+Invalid, 255 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 247 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-04-02 06:44:43,362 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [437 Valid, 134 Invalid, 255 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 247 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-04-02 06:44:43,379 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18813 states. [2023-04-02 06:44:46,037 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18813 to 18813. [2023-04-02 06:44:46,058 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18813 states, 18809 states have (on average 1.4627571907065766) internal successors, (27513), 18809 states have internal predecessors, (27513), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:44:46,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18813 states to 18813 states and 27516 transitions. [2023-04-02 06:44:46,092 INFO L78 Accepts]: Start accepts. Automaton has 18813 states and 27516 transitions. Word has length 100 [2023-04-02 06:44:46,093 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:44:46,093 INFO L495 AbstractCegarLoop]: Abstraction has 18813 states and 27516 transitions. [2023-04-02 06:44:46,093 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 19.4) internal successors, (97), 4 states have internal predecessors, (97), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:44:46,093 INFO L276 IsEmpty]: Start isEmpty. Operand 18813 states and 27516 transitions. [2023-04-02 06:44:46,094 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2023-04-02 06:44:46,094 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:44:46,094 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] [2023-04-02 06:44:46,094 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-04-02 06:44:46,094 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 06:44:46,094 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:44:46,095 INFO L85 PathProgramCache]: Analyzing trace with hash 2001569755, now seen corresponding path program 1 times [2023-04-02 06:44:46,095 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:44:46,095 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [441003874] [2023-04-02 06:44:46,095 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:44:46,095 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:44:46,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:44:46,372 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:44:46,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:44:46,393 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 06:44:46,393 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:44:46,393 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [441003874] [2023-04-02 06:44:46,393 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [441003874] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:44:46,393 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:44:46,393 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-04-02 06:44:46,394 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [431134929] [2023-04-02 06:44:46,394 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:44:46,394 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-04-02 06:44:46,394 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:44:46,395 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-04-02 06:44:46,395 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-04-02 06:44:46,395 INFO L87 Difference]: Start difference. First operand 18813 states and 27516 transitions. Second operand has 6 states, 5 states have (on average 19.4) internal successors, (97), 4 states have internal predecessors, (97), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:44:49,733 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:44:49,733 INFO L93 Difference]: Finished difference Result 37567 states and 54973 transitions. [2023-04-02 06:44:49,733 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-04-02 06:44:49,733 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 19.4) internal successors, (97), 4 states have internal predecessors, (97), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 100 [2023-04-02 06:44:49,734 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:44:49,760 INFO L225 Difference]: With dead ends: 37567 [2023-04-02 06:44:49,760 INFO L226 Difference]: Without dead ends: 18813 [2023-04-02 06:44:49,774 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2023-04-02 06:44:49,774 INFO L413 NwaCegarLoop]: 110 mSDtfsCounter, 382 mSDsluCounter, 56 mSDsCounter, 0 mSdLazyCounter, 245 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 382 SdHoareTripleChecker+Valid, 166 SdHoareTripleChecker+Invalid, 253 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 245 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-04-02 06:44:49,775 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [382 Valid, 166 Invalid, 253 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 245 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-04-02 06:44:49,788 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18813 states. [2023-04-02 06:44:52,542 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18813 to 18813. [2023-04-02 06:44:52,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18813 states, 18809 states have (on average 1.4525493114998138) internal successors, (27321), 18809 states have internal predecessors, (27321), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:44:52,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18813 states to 18813 states and 27324 transitions. [2023-04-02 06:44:52,588 INFO L78 Accepts]: Start accepts. Automaton has 18813 states and 27324 transitions. Word has length 100 [2023-04-02 06:44:52,588 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:44:52,588 INFO L495 AbstractCegarLoop]: Abstraction has 18813 states and 27324 transitions. [2023-04-02 06:44:52,588 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 19.4) internal successors, (97), 4 states have internal predecessors, (97), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:44:52,588 INFO L276 IsEmpty]: Start isEmpty. Operand 18813 states and 27324 transitions. [2023-04-02 06:44:52,588 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2023-04-02 06:44:52,588 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:44:52,589 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] [2023-04-02 06:44:52,589 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-04-02 06:44:52,589 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 06:44:52,589 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:44:52,589 INFO L85 PathProgramCache]: Analyzing trace with hash 1472279254, now seen corresponding path program 1 times [2023-04-02 06:44:52,589 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:44:52,589 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019746720] [2023-04-02 06:44:52,590 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:44:52,590 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:44:52,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:44:52,886 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:44:52,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:44:52,912 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 06:44:52,913 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:44:52,913 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019746720] [2023-04-02 06:44:52,913 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2019746720] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:44:52,913 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:44:52,913 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-04-02 06:44:52,913 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1718339935] [2023-04-02 06:44:52,913 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:44:52,913 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-04-02 06:44:52,913 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:44:52,914 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-04-02 06:44:52,914 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-04-02 06:44:52,914 INFO L87 Difference]: Start difference. First operand 18813 states and 27324 transitions. Second operand has 6 states, 5 states have (on average 19.4) internal successors, (97), 4 states have internal predecessors, (97), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:44:56,266 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:44:56,266 INFO L93 Difference]: Finished difference Result 37567 states and 54589 transitions. [2023-04-02 06:44:56,267 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-04-02 06:44:56,267 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 19.4) internal successors, (97), 4 states have internal predecessors, (97), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 100 [2023-04-02 06:44:56,267 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:44:56,292 INFO L225 Difference]: With dead ends: 37567 [2023-04-02 06:44:56,292 INFO L226 Difference]: Without dead ends: 18813 [2023-04-02 06:44:56,312 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2023-04-02 06:44:56,312 INFO L413 NwaCegarLoop]: 110 mSDtfsCounter, 418 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 243 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 418 SdHoareTripleChecker+Valid, 142 SdHoareTripleChecker+Invalid, 251 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 243 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-04-02 06:44:56,313 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [418 Valid, 142 Invalid, 251 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 243 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-04-02 06:44:56,324 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18813 states. [2023-04-02 06:44:59,147 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18813 to 18813. [2023-04-02 06:44:59,163 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18813 states, 18809 states have (on average 1.4423414322930512) internal successors, (27129), 18809 states have internal predecessors, (27129), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:44:59,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18813 states to 18813 states and 27132 transitions. [2023-04-02 06:44:59,190 INFO L78 Accepts]: Start accepts. Automaton has 18813 states and 27132 transitions. Word has length 100 [2023-04-02 06:44:59,190 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:44:59,190 INFO L495 AbstractCegarLoop]: Abstraction has 18813 states and 27132 transitions. [2023-04-02 06:44:59,190 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 19.4) internal successors, (97), 4 states have internal predecessors, (97), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:44:59,190 INFO L276 IsEmpty]: Start isEmpty. Operand 18813 states and 27132 transitions. [2023-04-02 06:44:59,190 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2023-04-02 06:44:59,190 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:44:59,191 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] [2023-04-02 06:44:59,191 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-04-02 06:44:59,191 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 06:44:59,191 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:44:59,191 INFO L85 PathProgramCache]: Analyzing trace with hash 709415547, now seen corresponding path program 1 times [2023-04-02 06:44:59,191 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:44:59,191 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [306273774] [2023-04-02 06:44:59,191 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:44:59,191 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:44:59,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:44:59,447 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:44:59,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:44:59,491 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 06:44:59,491 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:44:59,491 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [306273774] [2023-04-02 06:44:59,491 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [306273774] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:44:59,491 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:44:59,491 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-04-02 06:44:59,491 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [465387965] [2023-04-02 06:44:59,491 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:44:59,492 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-04-02 06:44:59,492 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:44:59,492 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-04-02 06:44:59,492 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-04-02 06:44:59,493 INFO L87 Difference]: Start difference. First operand 18813 states and 27132 transitions. Second operand has 6 states, 5 states have (on average 19.4) internal successors, (97), 4 states have internal predecessors, (97), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:45:02,922 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:45:02,922 INFO L93 Difference]: Finished difference Result 37567 states and 54205 transitions. [2023-04-02 06:45:02,923 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-04-02 06:45:02,923 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 19.4) internal successors, (97), 4 states have internal predecessors, (97), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 100 [2023-04-02 06:45:02,923 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:45:02,955 INFO L225 Difference]: With dead ends: 37567 [2023-04-02 06:45:02,955 INFO L226 Difference]: Without dead ends: 18813 [2023-04-02 06:45:02,972 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2023-04-02 06:45:02,973 INFO L413 NwaCegarLoop]: 110 mSDtfsCounter, 402 mSDsluCounter, 40 mSDsCounter, 0 mSdLazyCounter, 241 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 402 SdHoareTripleChecker+Valid, 150 SdHoareTripleChecker+Invalid, 249 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 241 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-04-02 06:45:02,973 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [402 Valid, 150 Invalid, 249 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 241 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-04-02 06:45:02,986 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18813 states. [2023-04-02 06:45:05,892 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18813 to 18813. [2023-04-02 06:45:05,909 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18813 states, 18809 states have (on average 1.4321335530862884) internal successors, (26937), 18809 states have internal predecessors, (26937), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:45:05,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18813 states to 18813 states and 26940 transitions. [2023-04-02 06:45:05,936 INFO L78 Accepts]: Start accepts. Automaton has 18813 states and 26940 transitions. Word has length 100 [2023-04-02 06:45:05,936 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:45:05,936 INFO L495 AbstractCegarLoop]: Abstraction has 18813 states and 26940 transitions. [2023-04-02 06:45:05,936 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 19.4) internal successors, (97), 4 states have internal predecessors, (97), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:45:05,937 INFO L276 IsEmpty]: Start isEmpty. Operand 18813 states and 26940 transitions. [2023-04-02 06:45:05,937 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2023-04-02 06:45:05,937 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:45:05,937 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] [2023-04-02 06:45:05,937 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-04-02 06:45:05,937 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 06:45:05,937 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:45:05,937 INFO L85 PathProgramCache]: Analyzing trace with hash 837500854, now seen corresponding path program 1 times [2023-04-02 06:45:05,937 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:45:05,938 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [262076849] [2023-04-02 06:45:05,938 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:45:05,938 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:45:05,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:45:06,350 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:45:06,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:45:06,360 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 06:45:06,360 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:45:06,360 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [262076849] [2023-04-02 06:45:06,360 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [262076849] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:45:06,360 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:45:06,360 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-04-02 06:45:06,361 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1313185874] [2023-04-02 06:45:06,361 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:45:06,361 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-04-02 06:45:06,361 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:45:06,362 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-04-02 06:45:06,362 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-04-02 06:45:06,362 INFO L87 Difference]: Start difference. First operand 18813 states and 26940 transitions. Second operand has 6 states, 6 states have (on average 16.166666666666668) internal successors, (97), 5 states have internal predecessors, (97), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:45:11,581 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:45:11,581 INFO L93 Difference]: Finished difference Result 27697 states and 39513 transitions. [2023-04-02 06:45:11,581 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-04-02 06:45:11,581 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 16.166666666666668) internal successors, (97), 5 states have internal predecessors, (97), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 100 [2023-04-02 06:45:11,582 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:45:11,619 INFO L225 Difference]: With dead ends: 27697 [2023-04-02 06:45:11,620 INFO L226 Difference]: Without dead ends: 27695 [2023-04-02 06:45:11,628 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-04-02 06:45:11,628 INFO L413 NwaCegarLoop]: 228 mSDtfsCounter, 225 mSDsluCounter, 568 mSDsCounter, 0 mSdLazyCounter, 258 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 225 SdHoareTripleChecker+Valid, 796 SdHoareTripleChecker+Invalid, 259 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 258 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-04-02 06:45:11,628 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [225 Valid, 796 Invalid, 259 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 258 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-04-02 06:45:11,644 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27695 states. [2023-04-02 06:45:15,012 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27695 to 19069. [2023-04-02 06:45:15,027 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19069 states, 19065 states have (on average 1.416260162601626) internal successors, (27001), 19065 states have internal predecessors, (27001), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:45:15,053 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19069 states to 19069 states and 27004 transitions. [2023-04-02 06:45:15,053 INFO L78 Accepts]: Start accepts. Automaton has 19069 states and 27004 transitions. Word has length 100 [2023-04-02 06:45:15,054 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:45:15,054 INFO L495 AbstractCegarLoop]: Abstraction has 19069 states and 27004 transitions. [2023-04-02 06:45:15,054 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 16.166666666666668) internal successors, (97), 5 states have internal predecessors, (97), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:45:15,054 INFO L276 IsEmpty]: Start isEmpty. Operand 19069 states and 27004 transitions. [2023-04-02 06:45:15,062 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2023-04-02 06:45:15,062 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:45:15,062 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 06:45:15,062 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-04-02 06:45:15,062 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 06:45:15,063 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:45:15,063 INFO L85 PathProgramCache]: Analyzing trace with hash 1214680255, now seen corresponding path program 1 times [2023-04-02 06:45:15,063 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:45:15,063 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1081368342] [2023-04-02 06:45:15,063 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:45:15,063 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:45:15,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:45:15,428 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:45:15,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:45:15,438 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-04-02 06:45:15,439 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:45:15,439 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1081368342] [2023-04-02 06:45:15,439 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1081368342] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:45:15,439 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:45:15,439 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-04-02 06:45:15,439 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [43480679] [2023-04-02 06:45:15,439 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:45:15,440 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-04-02 06:45:15,440 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:45:15,440 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-04-02 06:45:15,440 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2023-04-02 06:45:15,440 INFO L87 Difference]: Start difference. First operand 19069 states and 27004 transitions. Second operand has 10 states, 10 states have (on average 13.0) internal successors, (130), 9 states have internal predecessors, (130), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:45:42,917 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:45:42,917 INFO L93 Difference]: Finished difference Result 149131 states and 211171 transitions. [2023-04-02 06:45:42,918 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-04-02 06:45:42,918 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 13.0) internal successors, (130), 9 states have internal predecessors, (130), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 134 [2023-04-02 06:45:42,918 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:45:43,202 INFO L225 Difference]: With dead ends: 149131 [2023-04-02 06:45:43,203 INFO L226 Difference]: Without dead ends: 136329 [2023-04-02 06:45:43,321 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=86, Invalid=186, Unknown=0, NotChecked=0, Total=272 [2023-04-02 06:45:43,323 INFO L413 NwaCegarLoop]: 290 mSDtfsCounter, 2025 mSDsluCounter, 1644 mSDsCounter, 0 mSdLazyCounter, 422 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2025 SdHoareTripleChecker+Valid, 1934 SdHoareTripleChecker+Invalid, 441 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 422 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-04-02 06:45:43,325 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2025 Valid, 1934 Invalid, 441 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 422 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-04-02 06:45:43,410 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136329 states. [2023-04-02 06:45:52,209 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136329 to 35005. [2023-04-02 06:45:52,234 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35005 states, 35001 states have (on average 1.410502557069798) internal successors, (49369), 35001 states have internal predecessors, (49369), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:45:52,288 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35005 states to 35005 states and 49372 transitions. [2023-04-02 06:45:52,288 INFO L78 Accepts]: Start accepts. Automaton has 35005 states and 49372 transitions. Word has length 134 [2023-04-02 06:45:52,288 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:45:52,289 INFO L495 AbstractCegarLoop]: Abstraction has 35005 states and 49372 transitions. [2023-04-02 06:45:52,289 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 13.0) internal successors, (130), 9 states have internal predecessors, (130), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:45:52,289 INFO L276 IsEmpty]: Start isEmpty. Operand 35005 states and 49372 transitions. [2023-04-02 06:45:52,298 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2023-04-02 06:45:52,298 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:45:52,299 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 06:45:52,299 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-04-02 06:45:52,299 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 06:45:52,299 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:45:52,299 INFO L85 PathProgramCache]: Analyzing trace with hash -1234257403, now seen corresponding path program 1 times [2023-04-02 06:45:52,299 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:45:52,299 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [51740367] [2023-04-02 06:45:52,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:45:52,300 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:45:52,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:45:52,649 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:45:52,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:45:52,659 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-04-02 06:45:52,660 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:45:52,660 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [51740367] [2023-04-02 06:45:52,660 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [51740367] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:45:52,660 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:45:52,660 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-04-02 06:45:52,660 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [414026319] [2023-04-02 06:45:52,660 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:45:52,660 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-04-02 06:45:52,661 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:45:52,661 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-04-02 06:45:52,661 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2023-04-02 06:45:52,661 INFO L87 Difference]: Start difference. First operand 35005 states and 49372 transitions. Second operand has 10 states, 10 states have (on average 12.9) internal successors, (129), 9 states have internal predecessors, (129), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:46:31,828 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:46:31,829 INFO L93 Difference]: Finished difference Result 168139 states and 237987 transitions. [2023-04-02 06:46:31,829 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-04-02 06:46:31,829 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 12.9) internal successors, (129), 9 states have internal predecessors, (129), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 134 [2023-04-02 06:46:31,829 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:46:32,100 INFO L225 Difference]: With dead ends: 168139 [2023-04-02 06:46:32,100 INFO L226 Difference]: Without dead ends: 149129 [2023-04-02 06:46:32,318 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=86, Invalid=186, Unknown=0, NotChecked=0, Total=272 [2023-04-02 06:46:32,319 INFO L413 NwaCegarLoop]: 288 mSDtfsCounter, 2023 mSDsluCounter, 1605 mSDsCounter, 0 mSdLazyCounter, 442 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2023 SdHoareTripleChecker+Valid, 1893 SdHoareTripleChecker+Invalid, 461 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 442 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-04-02 06:46:32,319 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2023 Valid, 1893 Invalid, 461 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 442 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-04-02 06:46:32,412 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 149129 states. [2023-04-02 06:46:50,224 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 149129 to 60285. [2023-04-02 06:46:50,269 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60285 states, 60281 states have (on average 1.4082214959937625) internal successors, (84889), 60281 states have internal predecessors, (84889), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:46:50,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60285 states to 60285 states and 84892 transitions. [2023-04-02 06:46:50,381 INFO L78 Accepts]: Start accepts. Automaton has 60285 states and 84892 transitions. Word has length 134 [2023-04-02 06:46:50,382 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:46:50,382 INFO L495 AbstractCegarLoop]: Abstraction has 60285 states and 84892 transitions. [2023-04-02 06:46:50,382 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.9) internal successors, (129), 9 states have internal predecessors, (129), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:46:50,382 INFO L276 IsEmpty]: Start isEmpty. Operand 60285 states and 84892 transitions. [2023-04-02 06:46:50,393 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2023-04-02 06:46:50,393 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:46:50,393 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 06:46:50,394 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-04-02 06:46:50,394 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 06:46:50,394 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:46:50,394 INFO L85 PathProgramCache]: Analyzing trace with hash -2126005731, now seen corresponding path program 1 times [2023-04-02 06:46:50,394 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:46:50,394 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [485156203] [2023-04-02 06:46:50,394 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:46:50,395 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:46:50,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:46:50,767 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:46:50,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:46:50,778 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-04-02 06:46:50,778 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:46:50,778 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [485156203] [2023-04-02 06:46:50,778 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [485156203] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:46:50,778 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:46:50,778 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-04-02 06:46:50,778 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [642580086] [2023-04-02 06:46:50,778 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:46:50,779 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-04-02 06:46:50,779 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:46:50,779 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-04-02 06:46:50,779 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2023-04-02 06:46:50,780 INFO L87 Difference]: Start difference. First operand 60285 states and 84892 transitions. Second operand has 10 states, 10 states have (on average 12.5) internal successors, (125), 9 states have internal predecessors, (125), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:47:40,197 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:47:40,198 INFO L93 Difference]: Finished difference Result 187147 states and 264739 transitions. [2023-04-02 06:47:40,198 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-04-02 06:47:40,198 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 12.5) internal successors, (125), 9 states have internal predecessors, (125), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 134 [2023-04-02 06:47:40,199 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:47:40,712 INFO L225 Difference]: With dead ends: 187147 [2023-04-02 06:47:40,713 INFO L226 Difference]: Without dead ends: 168137 [2023-04-02 06:47:40,767 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=86, Invalid=186, Unknown=0, NotChecked=0, Total=272 [2023-04-02 06:47:40,767 INFO L413 NwaCegarLoop]: 286 mSDtfsCounter, 2123 mSDsluCounter, 1759 mSDsCounter, 0 mSdLazyCounter, 422 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2123 SdHoareTripleChecker+Valid, 2045 SdHoareTripleChecker+Invalid, 441 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 422 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-04-02 06:47:40,767 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2123 Valid, 2045 Invalid, 441 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 422 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-04-02 06:47:40,891 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 168137 states.