/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.UNBOUNDED.pals.c.v+cfa-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-f954360 [2023-04-02 06:45:53,494 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-04-02 06:45:53,496 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-04-02 06:45:53,533 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-04-02 06:45:53,534 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-04-02 06:45:53,536 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-04-02 06:45:53,539 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-04-02 06:45:53,542 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-04-02 06:45:53,543 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-04-02 06:45:53,548 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-04-02 06:45:53,549 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-04-02 06:45:53,551 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-04-02 06:45:53,551 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-04-02 06:45:53,553 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-04-02 06:45:53,555 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-04-02 06:45:53,556 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-04-02 06:45:53,557 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-04-02 06:45:53,557 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-04-02 06:45:53,559 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-04-02 06:45:53,564 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-04-02 06:45:53,565 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-04-02 06:45:53,566 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-04-02 06:45:53,567 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-04-02 06:45:53,568 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-04-02 06:45:53,575 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-04-02 06:45:53,576 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-04-02 06:45:53,576 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-04-02 06:45:53,577 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-04-02 06:45:53,577 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-04-02 06:45:53,578 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-04-02 06:45:53,578 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-04-02 06:45:53,579 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-04-02 06:45:53,580 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-04-02 06:45:53,581 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-04-02 06:45:53,581 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-04-02 06:45:53,581 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-04-02 06:45:53,582 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-04-02 06:45:53,582 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-04-02 06:45:53,582 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-04-02 06:45:53,583 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-04-02 06:45:53,583 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-04-02 06:45:53,585 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 06:45:53,610 INFO L113 SettingsManager]: Loading preferences was successful [2023-04-02 06:45:53,610 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-04-02 06:45:53,611 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-04-02 06:45:53,611 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-04-02 06:45:53,612 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-04-02 06:45:53,612 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-04-02 06:45:53,613 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-04-02 06:45:53,613 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-04-02 06:45:53,613 INFO L138 SettingsManager]: * Use SBE=true [2023-04-02 06:45:53,613 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-04-02 06:45:53,614 INFO L138 SettingsManager]: * sizeof long=4 [2023-04-02 06:45:53,614 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-04-02 06:45:53,614 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-04-02 06:45:53,614 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-04-02 06:45:53,614 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-04-02 06:45:53,615 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-04-02 06:45:53,615 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-04-02 06:45:53,615 INFO L138 SettingsManager]: * sizeof long double=12 [2023-04-02 06:45:53,615 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-04-02 06:45:53,615 INFO L138 SettingsManager]: * Use constant arrays=true [2023-04-02 06:45:53,615 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-04-02 06:45:53,615 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-04-02 06:45:53,615 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-04-02 06:45:53,616 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-04-02 06:45:53,616 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-02 06:45:53,616 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-04-02 06:45:53,616 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-04-02 06:45:53,616 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-04-02 06:45:53,616 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-04-02 06:45:53,617 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-04-02 06:45:53,617 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-04-02 06:45:53,617 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-04-02 06:45:53,617 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-04-02 06:45:53,617 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-04-02 06:45:53,617 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-04-02 06:45:53,618 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-04-02 06:45:53,873 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-04-02 06:45:53,901 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-04-02 06:45:53,904 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-04-02 06:45:53,905 INFO L271 PluginConnector]: Initializing CDTParser... [2023-04-02 06:45:53,905 INFO L275 PluginConnector]: CDTParser initialized [2023-04-02 06:45:53,906 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.7.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c [2023-04-02 06:45:55,050 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-04-02 06:45:55,242 INFO L351 CDTParser]: Found 1 translation units. [2023-04-02 06:45:55,242 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.7.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c [2023-04-02 06:45:55,251 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f77d4b857/15abb2e1c24642928340f6fe2f828f83/FLAGc00530deb [2023-04-02 06:45:55,264 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f77d4b857/15abb2e1c24642928340f6fe2f828f83 [2023-04-02 06:45:55,267 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-04-02 06:45:55,268 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2023-04-02 06:45:55,270 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-04-02 06:45:55,270 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-04-02 06:45:55,275 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-04-02 06:45:55,276 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.04 06:45:55" (1/1) ... [2023-04-02 06:45:55,276 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4ec5f407 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 06:45:55, skipping insertion in model container [2023-04-02 06:45:55,277 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.04 06:45:55" (1/1) ... [2023-04-02 06:45:55,283 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-04-02 06:45:55,324 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-04-02 06:45:55,508 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.7.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c[7667,7680] [2023-04-02 06:45:55,545 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-02 06:45:55,561 INFO L203 MainTranslator]: Completed pre-run [2023-04-02 06:45:55,600 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.UNBOUNDED.pals.c.v+cfa-reducer.c[7667,7680] [2023-04-02 06:45:55,625 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-02 06:45:55,647 INFO L208 MainTranslator]: Completed translation [2023-04-02 06:45:55,647 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 06:45:55 WrapperNode [2023-04-02 06:45:55,647 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-04-02 06:45:55,648 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-04-02 06:45:55,648 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-04-02 06:45:55,648 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-04-02 06:45:55,656 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 06:45:55" (1/1) ... [2023-04-02 06:45:55,657 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 06:45:55" (1/1) ... [2023-04-02 06:45:55,665 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 06:45:55" (1/1) ... [2023-04-02 06:45:55,665 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 06:45:55" (1/1) ... [2023-04-02 06:45:55,686 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 06:45:55" (1/1) ... [2023-04-02 06:45:55,698 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 06:45:55" (1/1) ... [2023-04-02 06:45:55,701 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 06:45:55" (1/1) ... [2023-04-02 06:45:55,703 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 06:45:55" (1/1) ... [2023-04-02 06:45:55,706 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-04-02 06:45:55,707 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-04-02 06:45:55,707 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-04-02 06:45:55,708 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-04-02 06:45:55,708 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 06:45:55" (1/1) ... [2023-04-02 06:45:55,714 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-02 06:45:55,724 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-02 06:45:55,750 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 06:45:55,759 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 06:45:55,788 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2023-04-02 06:45:55,788 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-04-02 06:45:55,790 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2023-04-02 06:45:55,790 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-04-02 06:45:55,790 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2023-04-02 06:45:55,791 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2023-04-02 06:45:55,791 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2023-04-02 06:45:55,791 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2023-04-02 06:45:55,791 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-04-02 06:45:55,791 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2023-04-02 06:45:55,791 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2023-04-02 06:45:55,792 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uchar [2023-04-02 06:45:55,792 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2023-04-02 06:45:55,792 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-04-02 06:45:55,792 INFO L130 BoogieDeclarations]: Found specification of procedure read [2023-04-02 06:45:55,792 INFO L130 BoogieDeclarations]: Found specification of procedure write [2023-04-02 06:45:55,792 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2023-04-02 06:45:55,792 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2023-04-02 06:45:55,792 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2023-04-02 06:45:55,792 INFO L130 BoogieDeclarations]: Found specification of procedure node4 [2023-04-02 06:45:55,792 INFO L130 BoogieDeclarations]: Found specification of procedure node5 [2023-04-02 06:45:55,793 INFO L130 BoogieDeclarations]: Found specification of procedure node6 [2023-04-02 06:45:55,793 INFO L130 BoogieDeclarations]: Found specification of procedure node7 [2023-04-02 06:45:55,793 INFO L130 BoogieDeclarations]: Found specification of procedure init [2023-04-02 06:45:55,793 INFO L130 BoogieDeclarations]: Found specification of procedure check [2023-04-02 06:45:55,793 INFO L130 BoogieDeclarations]: Found specification of procedure main [2023-04-02 06:45:55,793 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2023-04-02 06:45:55,793 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-04-02 06:45:55,793 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-04-02 06:45:55,793 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-04-02 06:45:55,793 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-04-02 06:45:55,793 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-04-02 06:45:55,948 INFO L236 CfgBuilder]: Building ICFG [2023-04-02 06:45:55,949 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-04-02 06:45:56,483 INFO L277 CfgBuilder]: Performing block encoding [2023-04-02 06:45:56,490 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-04-02 06:45:56,490 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-04-02 06:45:56,492 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.04 06:45:56 BoogieIcfgContainer [2023-04-02 06:45:56,492 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-04-02 06:45:56,494 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-04-02 06:45:56,494 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-04-02 06:45:56,497 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-04-02 06:45:56,497 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.04 06:45:55" (1/3) ... [2023-04-02 06:45:56,497 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@382ca4a0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.04 06:45:56, skipping insertion in model container [2023-04-02 06:45:56,498 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 06:45:55" (2/3) ... [2023-04-02 06:45:56,498 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@382ca4a0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.04 06:45:56, skipping insertion in model container [2023-04-02 06:45:56,498 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.04 06:45:56" (3/3) ... [2023-04-02 06:45:56,499 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_lcr.7.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c [2023-04-02 06:45:56,514 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-04-02 06:45:56,514 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-04-02 06:45:56,559 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-04-02 06:45:56,565 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;@64fe2e18, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-04-02 06:45:56,565 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-04-02 06:45:56,571 INFO L276 IsEmpty]: Start isEmpty. Operand has 144 states, 137 states have (on average 1.7372262773722629) internal successors, (238), 139 states have internal predecessors, (238), 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 06:45:56,586 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2023-04-02 06:45:56,586 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:45:56,588 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 06:45:56,588 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 06:45:56,594 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:45:56,594 INFO L85 PathProgramCache]: Analyzing trace with hash -883058439, now seen corresponding path program 1 times [2023-04-02 06:45:56,602 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:45:56,602 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1720180602] [2023-04-02 06:45:56,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:45:56,603 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:45:56,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:45:57,270 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:45:57,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:45:57,309 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 06:45:57,309 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:45:57,310 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1720180602] [2023-04-02 06:45:57,310 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1720180602] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:45:57,310 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:45:57,310 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-04-02 06:45:57,312 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [658062113] [2023-04-02 06:45:57,313 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:45:57,319 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-04-02 06:45:57,319 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:45:57,365 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-04-02 06:45:57,366 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-04-02 06:45:57,370 INFO L87 Difference]: Start difference. First operand has 144 states, 137 states have (on average 1.7372262773722629) internal successors, (238), 139 states have internal predecessors, (238), 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 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 06:45:58,395 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:45:58,396 INFO L93 Difference]: Finished difference Result 310 states and 497 transitions. [2023-04-02 06:45:58,397 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-04-02 06:45:58,399 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 06:45:58,399 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:45:58,411 INFO L225 Difference]: With dead ends: 310 [2023-04-02 06:45:58,411 INFO L226 Difference]: Without dead ends: 211 [2023-04-02 06:45:58,418 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 06:45:58,421 INFO L413 NwaCegarLoop]: 336 mSDtfsCounter, 163 mSDsluCounter, 145 mSDsCounter, 0 mSdLazyCounter, 340 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 163 SdHoareTripleChecker+Valid, 481 SdHoareTripleChecker+Invalid, 344 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 340 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-04-02 06:45:58,423 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [163 Valid, 481 Invalid, 344 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 340 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-04-02 06:45:58,439 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 211 states. [2023-04-02 06:45:58,473 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 211 to 209. [2023-04-02 06:45:58,475 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 209 states, 205 states have (on average 1.4292682926829268) internal successors, (293), 205 states have internal predecessors, (293), 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 06:45:58,476 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 209 states to 209 states and 296 transitions. [2023-04-02 06:45:58,477 INFO L78 Accepts]: Start accepts. Automaton has 209 states and 296 transitions. Word has length 91 [2023-04-02 06:45:58,477 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:45:58,478 INFO L495 AbstractCegarLoop]: Abstraction has 209 states and 296 transitions. [2023-04-02 06:45:58,478 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 06:45:58,478 INFO L276 IsEmpty]: Start isEmpty. Operand 209 states and 296 transitions. [2023-04-02 06:45:58,480 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2023-04-02 06:45:58,481 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:45:58,481 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 06:45:58,481 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-04-02 06:45:58,481 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 06:45:58,482 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:45:58,482 INFO L85 PathProgramCache]: Analyzing trace with hash 1405923042, now seen corresponding path program 1 times [2023-04-02 06:45:58,482 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:45:58,482 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [666951236] [2023-04-02 06:45:58,482 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:45:58,483 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:45:58,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:45:58,831 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:45:58,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:45:58,856 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 06:45:58,857 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:45:58,857 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [666951236] [2023-04-02 06:45:58,857 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [666951236] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:45:58,858 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:45:58,858 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-04-02 06:45:58,858 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [54716049] [2023-04-02 06:45:58,858 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:45:58,859 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-04-02 06:45:58,860 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:45:58,860 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-04-02 06:45:58,861 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-04-02 06:45:58,861 INFO L87 Difference]: Start difference. First operand 209 states and 296 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 06:45:59,547 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:45:59,548 INFO L93 Difference]: Finished difference Result 497 states and 748 transitions. [2023-04-02 06:45:59,548 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-04-02 06:45:59,549 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 06:45:59,549 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:45:59,551 INFO L225 Difference]: With dead ends: 497 [2023-04-02 06:45:59,551 INFO L226 Difference]: Without dead ends: 345 [2023-04-02 06:45:59,553 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 06:45:59,554 INFO L413 NwaCegarLoop]: 265 mSDtfsCounter, 110 mSDsluCounter, 132 mSDsCounter, 0 mSdLazyCounter, 271 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 110 SdHoareTripleChecker+Valid, 397 SdHoareTripleChecker+Invalid, 275 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 271 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-04-02 06:45:59,554 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [110 Valid, 397 Invalid, 275 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 271 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-04-02 06:45:59,555 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 345 states. [2023-04-02 06:45:59,589 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 345 to 343. [2023-04-02 06:45:59,590 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 343 states, 339 states have (on average 1.4837758112094395) internal successors, (503), 339 states have internal predecessors, (503), 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 06:45:59,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 343 states to 343 states and 506 transitions. [2023-04-02 06:45:59,591 INFO L78 Accepts]: Start accepts. Automaton has 343 states and 506 transitions. Word has length 92 [2023-04-02 06:45:59,593 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:45:59,593 INFO L495 AbstractCegarLoop]: Abstraction has 343 states and 506 transitions. [2023-04-02 06:45:59,593 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 06:45:59,594 INFO L276 IsEmpty]: Start isEmpty. Operand 343 states and 506 transitions. [2023-04-02 06:45:59,600 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2023-04-02 06:45:59,600 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:45:59,600 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 06:45:59,600 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-04-02 06:45:59,601 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 06:45:59,601 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:45:59,601 INFO L85 PathProgramCache]: Analyzing trace with hash 36441319, now seen corresponding path program 1 times [2023-04-02 06:45:59,601 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:45:59,601 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [568337255] [2023-04-02 06:45:59,602 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:45:59,602 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:45:59,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:45:59,942 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:45:59,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:45:59,957 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 06:45:59,958 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:45:59,958 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [568337255] [2023-04-02 06:45:59,958 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [568337255] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:45:59,958 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:45:59,958 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-04-02 06:45:59,959 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1678864962] [2023-04-02 06:45:59,959 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:45:59,959 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-04-02 06:45:59,959 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:45:59,960 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-04-02 06:45:59,960 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-04-02 06:45:59,960 INFO L87 Difference]: Start difference. First operand 343 states and 506 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 06:46:00,625 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:46:00,625 INFO L93 Difference]: Finished difference Result 883 states and 1352 transitions. [2023-04-02 06:46:00,626 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-04-02 06:46:00,626 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 06:46:00,626 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:46:00,629 INFO L225 Difference]: With dead ends: 883 [2023-04-02 06:46:00,629 INFO L226 Difference]: Without dead ends: 597 [2023-04-02 06:46:00,630 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 06:46:00,631 INFO L413 NwaCegarLoop]: 257 mSDtfsCounter, 105 mSDsluCounter, 136 mSDsCounter, 0 mSdLazyCounter, 263 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 105 SdHoareTripleChecker+Valid, 393 SdHoareTripleChecker+Invalid, 267 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 263 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-04-02 06:46:00,632 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [105 Valid, 393 Invalid, 267 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 263 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-04-02 06:46:00,633 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 597 states. [2023-04-02 06:46:00,678 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 597 to 595. [2023-04-02 06:46:00,679 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 595 states, 591 states have (on average 1.5143824027072759) internal successors, (895), 591 states have internal predecessors, (895), 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 06:46:00,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 595 states to 595 states and 898 transitions. [2023-04-02 06:46:00,681 INFO L78 Accepts]: Start accepts. Automaton has 595 states and 898 transitions. Word has length 93 [2023-04-02 06:46:00,682 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:46:00,682 INFO L495 AbstractCegarLoop]: Abstraction has 595 states and 898 transitions. [2023-04-02 06:46:00,682 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 06:46:00,682 INFO L276 IsEmpty]: Start isEmpty. Operand 595 states and 898 transitions. [2023-04-02 06:46:00,683 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2023-04-02 06:46:00,683 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:46:00,683 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 06:46:00,684 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-04-02 06:46:00,684 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 06:46:00,684 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:46:00,684 INFO L85 PathProgramCache]: Analyzing trace with hash 1021904530, now seen corresponding path program 1 times [2023-04-02 06:46:00,685 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:46:00,685 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [805911973] [2023-04-02 06:46:00,685 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:46:00,685 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:46:00,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:46:00,934 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:46:00,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:46:00,956 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 06:46:00,956 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:46:00,956 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [805911973] [2023-04-02 06:46:00,957 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [805911973] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:46:00,957 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:46:00,957 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-04-02 06:46:00,957 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [22538306] [2023-04-02 06:46:00,957 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:46:00,958 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-04-02 06:46:00,958 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:46:00,958 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-04-02 06:46:00,958 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-04-02 06:46:00,959 INFO L87 Difference]: Start difference. First operand 595 states and 898 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 06:46:01,625 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:46:01,626 INFO L93 Difference]: Finished difference Result 1607 states and 2476 transitions. [2023-04-02 06:46:01,626 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-04-02 06:46:01,627 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 06:46:01,628 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:46:01,634 INFO L225 Difference]: With dead ends: 1607 [2023-04-02 06:46:01,634 INFO L226 Difference]: Without dead ends: 1069 [2023-04-02 06:46:01,635 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 06:46:01,639 INFO L413 NwaCegarLoop]: 249 mSDtfsCounter, 100 mSDsluCounter, 140 mSDsCounter, 0 mSdLazyCounter, 255 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 100 SdHoareTripleChecker+Valid, 389 SdHoareTripleChecker+Invalid, 259 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 255 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-04-02 06:46:01,640 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [100 Valid, 389 Invalid, 259 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 255 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-04-02 06:46:01,641 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1069 states. [2023-04-02 06:46:01,715 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1069 to 1067. [2023-04-02 06:46:01,718 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1067 states, 1063 states have (on average 1.5268109125117593) internal successors, (1623), 1063 states have internal predecessors, (1623), 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 06:46:01,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1067 states to 1067 states and 1626 transitions. [2023-04-02 06:46:01,721 INFO L78 Accepts]: Start accepts. Automaton has 1067 states and 1626 transitions. Word has length 94 [2023-04-02 06:46:01,721 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:46:01,722 INFO L495 AbstractCegarLoop]: Abstraction has 1067 states and 1626 transitions. [2023-04-02 06:46:01,722 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 06:46:01,722 INFO L276 IsEmpty]: Start isEmpty. Operand 1067 states and 1626 transitions. [2023-04-02 06:46:01,723 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2023-04-02 06:46:01,723 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:46:01,723 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 06:46:01,723 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-04-02 06:46:01,723 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 06:46:01,724 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:46:01,724 INFO L85 PathProgramCache]: Analyzing trace with hash -764668856, now seen corresponding path program 1 times [2023-04-02 06:46:01,724 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:46:01,724 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [493776722] [2023-04-02 06:46:01,724 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:46:01,724 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:46:01,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:46:01,984 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:46:01,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:46:01,996 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 06:46:01,996 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:46:01,996 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [493776722] [2023-04-02 06:46:01,997 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [493776722] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:46:01,997 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:46:01,997 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-04-02 06:46:01,997 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [802815751] [2023-04-02 06:46:01,997 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:46:01,998 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-04-02 06:46:01,998 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:46:01,998 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-04-02 06:46:01,998 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-04-02 06:46:01,999 INFO L87 Difference]: Start difference. First operand 1067 states and 1626 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 06:46:02,721 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:46:02,721 INFO L93 Difference]: Finished difference Result 2959 states and 4556 transitions. [2023-04-02 06:46:02,721 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-04-02 06:46:02,722 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 06:46:02,722 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:46:02,729 INFO L225 Difference]: With dead ends: 2959 [2023-04-02 06:46:02,729 INFO L226 Difference]: Without dead ends: 1949 [2023-04-02 06:46:02,731 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 06:46:02,732 INFO L413 NwaCegarLoop]: 241 mSDtfsCounter, 95 mSDsluCounter, 144 mSDsCounter, 0 mSdLazyCounter, 247 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 95 SdHoareTripleChecker+Valid, 385 SdHoareTripleChecker+Invalid, 251 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 247 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-04-02 06:46:02,732 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [95 Valid, 385 Invalid, 251 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 247 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-04-02 06:46:02,734 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1949 states. [2023-04-02 06:46:02,864 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1949 to 1947. [2023-04-02 06:46:02,868 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1947 states, 1943 states have (on average 1.5270200720535254) internal successors, (2967), 1943 states have internal predecessors, (2967), 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 06:46:02,874 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1947 states to 1947 states and 2970 transitions. [2023-04-02 06:46:02,875 INFO L78 Accepts]: Start accepts. Automaton has 1947 states and 2970 transitions. Word has length 95 [2023-04-02 06:46:02,875 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:46:02,875 INFO L495 AbstractCegarLoop]: Abstraction has 1947 states and 2970 transitions. [2023-04-02 06:46:02,875 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 06:46:02,876 INFO L276 IsEmpty]: Start isEmpty. Operand 1947 states and 2970 transitions. [2023-04-02 06:46:02,876 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2023-04-02 06:46:02,876 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:46:02,876 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 06:46:02,877 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-04-02 06:46:02,877 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 06:46:02,877 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:46:02,877 INFO L85 PathProgramCache]: Analyzing trace with hash -447016609, now seen corresponding path program 1 times [2023-04-02 06:46:02,878 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:46:02,878 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [121290624] [2023-04-02 06:46:02,878 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:46:02,878 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:46:02,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:46:03,109 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:46:03,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:46:03,129 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 06:46:03,129 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:46:03,129 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [121290624] [2023-04-02 06:46:03,129 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [121290624] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:46:03,129 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:46:03,129 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-04-02 06:46:03,130 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [436719616] [2023-04-02 06:46:03,130 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:46:03,130 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-04-02 06:46:03,130 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:46:03,131 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-04-02 06:46:03,131 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-04-02 06:46:03,131 INFO L87 Difference]: Start difference. First operand 1947 states and 2970 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 06:46:03,961 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:46:03,961 INFO L93 Difference]: Finished difference Result 5471 states and 8380 transitions. [2023-04-02 06:46:03,962 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-04-02 06:46:03,962 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 06:46:03,963 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:46:03,977 INFO L225 Difference]: With dead ends: 5471 [2023-04-02 06:46:03,977 INFO L226 Difference]: Without dead ends: 3581 [2023-04-02 06:46:03,981 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 06:46:03,982 INFO L413 NwaCegarLoop]: 233 mSDtfsCounter, 90 mSDsluCounter, 148 mSDsCounter, 0 mSdLazyCounter, 239 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 90 SdHoareTripleChecker+Valid, 381 SdHoareTripleChecker+Invalid, 243 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 239 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-04-02 06:46:03,982 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [90 Valid, 381 Invalid, 243 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 239 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-04-02 06:46:03,986 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3581 states. [2023-04-02 06:46:04,248 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3581 to 3579. [2023-04-02 06:46:04,255 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3579 states, 3575 states have (on average 1.519160839160839) internal successors, (5431), 3575 states have internal predecessors, (5431), 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 06:46:04,269 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3579 states to 3579 states and 5434 transitions. [2023-04-02 06:46:04,269 INFO L78 Accepts]: Start accepts. Automaton has 3579 states and 5434 transitions. Word has length 96 [2023-04-02 06:46:04,270 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:46:04,270 INFO L495 AbstractCegarLoop]: Abstraction has 3579 states and 5434 transitions. [2023-04-02 06:46:04,270 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 06:46:04,270 INFO L276 IsEmpty]: Start isEmpty. Operand 3579 states and 5434 transitions. [2023-04-02 06:46:04,271 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2023-04-02 06:46:04,271 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:46:04,271 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 06:46:04,271 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-04-02 06:46:04,271 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 06:46:04,272 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:46:04,272 INFO L85 PathProgramCache]: Analyzing trace with hash -1468458687, now seen corresponding path program 1 times [2023-04-02 06:46:04,272 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:46:04,272 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [561278763] [2023-04-02 06:46:04,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:46:04,272 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:46:04,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:46:04,666 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:46:04,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:46:04,677 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 06:46:04,678 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:46:04,678 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [561278763] [2023-04-02 06:46:04,678 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [561278763] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:46:04,678 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:46:04,678 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-04-02 06:46:04,678 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [999359985] [2023-04-02 06:46:04,678 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:46:04,679 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-04-02 06:46:04,679 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:46:04,679 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-04-02 06:46:04,679 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2023-04-02 06:46:04,680 INFO L87 Difference]: Start difference. First operand 3579 states and 5434 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 06:46:09,405 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:46:09,405 INFO L93 Difference]: Finished difference Result 52887 states and 80712 transitions. [2023-04-02 06:46:09,406 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-04-02 06:46:09,406 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 06:46:09,406 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:46:09,581 INFO L225 Difference]: With dead ends: 52887 [2023-04-02 06:46:09,582 INFO L226 Difference]: Without dead ends: 49365 [2023-04-02 06:46:09,610 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=147, Invalid=315, Unknown=0, NotChecked=0, Total=462 [2023-04-02 06:46:09,611 INFO L413 NwaCegarLoop]: 179 mSDtfsCounter, 2473 mSDsluCounter, 4642 mSDsCounter, 0 mSdLazyCounter, 377 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2473 SdHoareTripleChecker+Valid, 4821 SdHoareTripleChecker+Invalid, 400 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 377 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-04-02 06:46:09,611 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2473 Valid, 4821 Invalid, 400 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 377 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-04-02 06:46:09,664 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49365 states. [2023-04-02 06:46:11,089 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49365 to 7099. [2023-04-02 06:46:11,100 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7099 states, 7095 states have (on average 1.5141649048625794) internal successors, (10743), 7095 states have internal predecessors, (10743), 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 06:46:11,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7099 states to 7099 states and 10746 transitions. [2023-04-02 06:46:11,119 INFO L78 Accepts]: Start accepts. Automaton has 7099 states and 10746 transitions. Word has length 97 [2023-04-02 06:46:11,119 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:46:11,119 INFO L495 AbstractCegarLoop]: Abstraction has 7099 states and 10746 transitions. [2023-04-02 06:46:11,119 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 06:46:11,119 INFO L276 IsEmpty]: Start isEmpty. Operand 7099 states and 10746 transitions. [2023-04-02 06:46:11,120 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2023-04-02 06:46:11,120 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:46:11,120 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 06:46:11,120 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-04-02 06:46:11,121 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 06:46:11,121 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:46:11,121 INFO L85 PathProgramCache]: Analyzing trace with hash 962253148, now seen corresponding path program 1 times [2023-04-02 06:46:11,121 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:46:11,121 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2038187244] [2023-04-02 06:46:11,121 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:46:11,122 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:46:11,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:46:11,387 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:46:11,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:46:11,399 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 06:46:11,400 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:46:11,401 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2038187244] [2023-04-02 06:46:11,401 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2038187244] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:46:11,401 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:46:11,401 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-04-02 06:46:11,401 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1923218277] [2023-04-02 06:46:11,401 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:46:11,401 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-04-02 06:46:11,401 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:46:11,402 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-04-02 06:46:11,402 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-04-02 06:46:11,402 INFO L87 Difference]: Start difference. First operand 7099 states and 10746 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 06:46:13,757 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:46:13,758 INFO L93 Difference]: Finished difference Result 20607 states and 31164 transitions. [2023-04-02 06:46:13,758 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-04-02 06:46:13,758 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 06:46:13,759 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:46:13,797 INFO L225 Difference]: With dead ends: 20607 [2023-04-02 06:46:13,797 INFO L226 Difference]: Without dead ends: 13565 [2023-04-02 06:46:13,816 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 06:46:13,817 INFO L413 NwaCegarLoop]: 180 mSDtfsCounter, 83 mSDsluCounter, 123 mSDsCounter, 0 mSdLazyCounter, 196 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 83 SdHoareTripleChecker+Valid, 303 SdHoareTripleChecker+Invalid, 199 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 196 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-04-02 06:46:13,818 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [83 Valid, 303 Invalid, 199 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 196 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-04-02 06:46:13,831 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13565 states. [2023-04-02 06:46:15,753 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13565 to 13435. [2023-04-02 06:46:15,773 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13435 states, 13431 states have (on average 1.4955699501154047) internal successors, (20087), 13431 states have internal predecessors, (20087), 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 06:46:15,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13435 states to 13435 states and 20090 transitions. [2023-04-02 06:46:15,805 INFO L78 Accepts]: Start accepts. Automaton has 13435 states and 20090 transitions. Word has length 99 [2023-04-02 06:46:15,805 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:46:15,805 INFO L495 AbstractCegarLoop]: Abstraction has 13435 states and 20090 transitions. [2023-04-02 06:46:15,805 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 06:46:15,806 INFO L276 IsEmpty]: Start isEmpty. Operand 13435 states and 20090 transitions. [2023-04-02 06:46:15,806 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2023-04-02 06:46:15,806 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:46:15,807 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 06:46:15,807 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-04-02 06:46:15,807 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 06:46:15,807 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:46:15,807 INFO L85 PathProgramCache]: Analyzing trace with hash 982302491, now seen corresponding path program 1 times [2023-04-02 06:46:15,807 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:46:15,807 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1772021514] [2023-04-02 06:46:15,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:46:15,808 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:46:15,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:46:16,412 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:46:16,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:46:16,427 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 06:46:16,427 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:46:16,427 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1772021514] [2023-04-02 06:46:16,428 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1772021514] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:46:16,428 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:46:16,431 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-04-02 06:46:16,431 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [507622283] [2023-04-02 06:46:16,431 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:46:16,432 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-04-02 06:46:16,432 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:46:16,432 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-04-02 06:46:16,433 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2023-04-02 06:46:16,439 INFO L87 Difference]: Start difference. First operand 13435 states and 20090 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 06:46:19,117 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:46:19,118 INFO L93 Difference]: Finished difference Result 26815 states and 40124 transitions. [2023-04-02 06:46:19,118 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-04-02 06:46:19,119 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 06:46:19,119 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:46:19,148 INFO L225 Difference]: With dead ends: 26815 [2023-04-02 06:46:19,148 INFO L226 Difference]: Without dead ends: 13437 [2023-04-02 06:46:19,175 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 06:46:19,178 INFO L413 NwaCegarLoop]: 227 mSDtfsCounter, 548 mSDsluCounter, 766 mSDsCounter, 0 mSdLazyCounter, 363 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 548 SdHoareTripleChecker+Valid, 993 SdHoareTripleChecker+Invalid, 386 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 363 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-04-02 06:46:19,178 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [548 Valid, 993 Invalid, 386 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 363 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-04-02 06:46:19,189 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13437 states. [2023-04-02 06:46:21,003 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13437 to 13435. [2023-04-02 06:46:21,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13435 states, 13431 states have (on average 1.4860397587670315) internal successors, (19959), 13431 states have internal predecessors, (19959), 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 06:46:21,051 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13435 states to 13435 states and 19962 transitions. [2023-04-02 06:46:21,051 INFO L78 Accepts]: Start accepts. Automaton has 13435 states and 19962 transitions. Word has length 99 [2023-04-02 06:46:21,052 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:46:21,052 INFO L495 AbstractCegarLoop]: Abstraction has 13435 states and 19962 transitions. [2023-04-02 06:46:21,052 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 06:46:21,052 INFO L276 IsEmpty]: Start isEmpty. Operand 13435 states and 19962 transitions. [2023-04-02 06:46:21,053 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2023-04-02 06:46:21,053 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:46:21,053 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 06:46:21,053 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-04-02 06:46:21,053 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 06:46:21,054 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:46:21,054 INFO L85 PathProgramCache]: Analyzing trace with hash 819259770, now seen corresponding path program 1 times [2023-04-02 06:46:21,054 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:46:21,054 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [165614716] [2023-04-02 06:46:21,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:46:21,054 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:46:21,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:46:21,393 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:46:21,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:46:21,407 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 06:46:21,407 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:46:21,407 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [165614716] [2023-04-02 06:46:21,407 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [165614716] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:46:21,407 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:46:21,408 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-04-02 06:46:21,408 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [174610069] [2023-04-02 06:46:21,408 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:46:21,408 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-04-02 06:46:21,408 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:46:21,409 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-04-02 06:46:21,409 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-04-02 06:46:21,409 INFO L87 Difference]: Start difference. First operand 13435 states and 19962 transitions. Second operand has 4 states, 4 states have (on average 24.25) internal successors, (97), 3 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 06:46:24,201 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:46:24,202 INFO L93 Difference]: Finished difference Result 26242 states and 39168 transitions. [2023-04-02 06:46:24,202 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-04-02 06:46:24,202 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 24.25) internal successors, (97), 3 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 06:46:24,202 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:46:24,240 INFO L225 Difference]: With dead ends: 26242 [2023-04-02 06:46:24,240 INFO L226 Difference]: Without dead ends: 19199 [2023-04-02 06:46:24,258 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 06:46:24,258 INFO L413 NwaCegarLoop]: 288 mSDtfsCounter, 117 mSDsluCounter, 124 mSDsCounter, 0 mSdLazyCounter, 294 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 117 SdHoareTripleChecker+Valid, 412 SdHoareTripleChecker+Invalid, 298 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 294 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-04-02 06:46:24,259 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [117 Valid, 412 Invalid, 298 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 294 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-04-02 06:46:24,274 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19199 states. [2023-04-02 06:46:26,826 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19199 to 19197. [2023-04-02 06:46:26,851 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19197 states, 19193 states have (on average 1.480175063825353) internal successors, (28409), 19193 states have internal predecessors, (28409), 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 06:46:26,895 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19197 states to 19197 states and 28412 transitions. [2023-04-02 06:46:26,895 INFO L78 Accepts]: Start accepts. Automaton has 19197 states and 28412 transitions. Word has length 100 [2023-04-02 06:46:26,895 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:46:26,895 INFO L495 AbstractCegarLoop]: Abstraction has 19197 states and 28412 transitions. [2023-04-02 06:46:26,896 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 24.25) internal successors, (97), 3 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 06:46:26,896 INFO L276 IsEmpty]: Start isEmpty. Operand 19197 states and 28412 transitions. [2023-04-02 06:46:26,896 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2023-04-02 06:46:26,897 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:46:26,897 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 06:46:26,897 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-04-02 06:46:26,897 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 06:46:26,897 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:46:26,898 INFO L85 PathProgramCache]: Analyzing trace with hash 384696880, now seen corresponding path program 1 times [2023-04-02 06:46:26,898 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:46:26,898 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1829565594] [2023-04-02 06:46:26,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:46:26,898 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:46:26,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:46:27,197 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:46:27,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:46:27,225 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 06:46:27,225 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:46:27,225 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1829565594] [2023-04-02 06:46:27,225 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1829565594] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:46:27,225 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:46:27,226 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-04-02 06:46:27,226 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [543064562] [2023-04-02 06:46:27,226 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:46:27,226 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-04-02 06:46:27,226 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:46:27,227 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-04-02 06:46:27,227 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-04-02 06:46:27,228 INFO L87 Difference]: Start difference. First operand 19197 states and 28412 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 06:46:30,356 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:46:30,356 INFO L93 Difference]: Finished difference Result 38335 states and 56765 transitions. [2023-04-02 06:46:30,356 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-04-02 06:46:30,357 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 06:46:30,357 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:46:30,395 INFO L225 Difference]: With dead ends: 38335 [2023-04-02 06:46:30,395 INFO L226 Difference]: Without dead ends: 19197 [2023-04-02 06:46:30,425 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 06:46:30,426 INFO L413 NwaCegarLoop]: 113 mSDtfsCounter, 475 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 252 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 475 SdHoareTripleChecker+Valid, 121 SdHoareTripleChecker+Invalid, 260 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 252 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-04-02 06:46:30,426 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [475 Valid, 121 Invalid, 260 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 252 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-04-02 06:46:30,443 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19197 states. [2023-04-02 06:46:33,215 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19197 to 19197. [2023-04-02 06:46:33,234 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19197 states, 19193 states have (on average 1.4668368676079822) internal successors, (28153), 19193 states have internal predecessors, (28153), 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 06:46:33,265 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19197 states to 19197 states and 28156 transitions. [2023-04-02 06:46:33,266 INFO L78 Accepts]: Start accepts. Automaton has 19197 states and 28156 transitions. Word has length 100 [2023-04-02 06:46:33,266 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:46:33,266 INFO L495 AbstractCegarLoop]: Abstraction has 19197 states and 28156 transitions. [2023-04-02 06:46:33,266 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 06:46:33,266 INFO L276 IsEmpty]: Start isEmpty. Operand 19197 states and 28156 transitions. [2023-04-02 06:46:33,267 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2023-04-02 06:46:33,267 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:46:33,267 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 06:46:33,267 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-04-02 06:46:33,267 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 06:46:33,267 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:46:33,267 INFO L85 PathProgramCache]: Analyzing trace with hash 22578155, now seen corresponding path program 1 times [2023-04-02 06:46:33,268 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:46:33,268 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1985483565] [2023-04-02 06:46:33,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:46:33,268 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:46:33,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:46:33,593 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:46:33,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:46:33,617 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 06:46:33,618 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:46:33,618 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1985483565] [2023-04-02 06:46:33,618 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1985483565] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:46:33,618 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:46:33,618 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-04-02 06:46:33,618 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [106988410] [2023-04-02 06:46:33,618 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:46:33,619 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-04-02 06:46:33,619 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:46:33,619 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-04-02 06:46:33,619 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-04-02 06:46:33,619 INFO L87 Difference]: Start difference. First operand 19197 states and 28156 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 06:46:36,862 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:46:36,862 INFO L93 Difference]: Finished difference Result 38335 states and 56253 transitions. [2023-04-02 06:46:36,862 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-04-02 06:46:36,863 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 06:46:36,863 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:46:36,889 INFO L225 Difference]: With dead ends: 38335 [2023-04-02 06:46:36,890 INFO L226 Difference]: Without dead ends: 19197 [2023-04-02 06:46:36,907 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 06:46:36,907 INFO L413 NwaCegarLoop]: 113 mSDtfsCounter, 407 mSDsluCounter, 48 mSDsCounter, 0 mSdLazyCounter, 250 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 407 SdHoareTripleChecker+Valid, 161 SdHoareTripleChecker+Invalid, 258 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 250 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-04-02 06:46:36,908 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [407 Valid, 161 Invalid, 258 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 250 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-04-02 06:46:36,924 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19197 states. [2023-04-02 06:46:39,634 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19197 to 19197. [2023-04-02 06:46:39,654 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19197 states, 19193 states have (on average 1.456833220444954) internal successors, (27961), 19193 states have internal predecessors, (27961), 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 06:46:39,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19197 states to 19197 states and 27964 transitions. [2023-04-02 06:46:39,691 INFO L78 Accepts]: Start accepts. Automaton has 19197 states and 27964 transitions. Word has length 100 [2023-04-02 06:46:39,691 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:46:39,691 INFO L495 AbstractCegarLoop]: Abstraction has 19197 states and 27964 transitions. [2023-04-02 06:46:39,691 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 06:46:39,691 INFO L276 IsEmpty]: Start isEmpty. Operand 19197 states and 27964 transitions. [2023-04-02 06:46:39,692 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2023-04-02 06:46:39,692 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:46:39,692 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 06:46:39,692 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-04-02 06:46:39,693 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 06:46:39,693 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:46:39,693 INFO L85 PathProgramCache]: Analyzing trace with hash 888110544, now seen corresponding path program 1 times [2023-04-02 06:46:39,693 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:46:39,693 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [667367309] [2023-04-02 06:46:39,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:46:39,693 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:46:39,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:46:39,981 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:46:39,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:46:40,005 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 06:46:40,005 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:46:40,005 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [667367309] [2023-04-02 06:46:40,005 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [667367309] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:46:40,005 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:46:40,006 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-04-02 06:46:40,006 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1042329184] [2023-04-02 06:46:40,006 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:46:40,006 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-04-02 06:46:40,006 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:46:40,007 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-04-02 06:46:40,007 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-04-02 06:46:40,007 INFO L87 Difference]: Start difference. First operand 19197 states and 27964 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 06:46:43,322 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:46:43,322 INFO L93 Difference]: Finished difference Result 38335 states and 55869 transitions. [2023-04-02 06:46:43,322 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-04-02 06:46:43,322 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 06:46:43,323 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:46:43,349 INFO L225 Difference]: With dead ends: 38335 [2023-04-02 06:46:43,349 INFO L226 Difference]: Without dead ends: 19197 [2023-04-02 06:46:43,367 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 06:46:43,368 INFO L413 NwaCegarLoop]: 113 mSDtfsCounter, 456 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 248 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 456 SdHoareTripleChecker+Valid, 129 SdHoareTripleChecker+Invalid, 256 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 248 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-04-02 06:46:43,368 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [456 Valid, 129 Invalid, 256 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 248 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-04-02 06:46:43,384 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19197 states. [2023-04-02 06:46:46,338 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19197 to 19197. [2023-04-02 06:46:46,352 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19197 states, 19193 states have (on average 1.4468295732819256) internal successors, (27769), 19193 states have internal predecessors, (27769), 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 06:46:46,379 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19197 states to 19197 states and 27772 transitions. [2023-04-02 06:46:46,379 INFO L78 Accepts]: Start accepts. Automaton has 19197 states and 27772 transitions. Word has length 100 [2023-04-02 06:46:46,379 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:46:46,379 INFO L495 AbstractCegarLoop]: Abstraction has 19197 states and 27772 transitions. [2023-04-02 06:46:46,379 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 06:46:46,379 INFO L276 IsEmpty]: Start isEmpty. Operand 19197 states and 27772 transitions. [2023-04-02 06:46:46,380 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2023-04-02 06:46:46,380 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:46:46,380 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 06:46:46,380 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-04-02 06:46:46,380 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 06:46:46,381 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:46:46,381 INFO L85 PathProgramCache]: Analyzing trace with hash -853306571, now seen corresponding path program 1 times [2023-04-02 06:46:46,381 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:46:46,381 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1350481505] [2023-04-02 06:46:46,382 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:46:46,382 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:46:46,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:46:46,671 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:46:46,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:46:46,700 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 06:46:46,700 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:46:46,700 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1350481505] [2023-04-02 06:46:46,700 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1350481505] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:46:46,700 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:46:46,700 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-04-02 06:46:46,701 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [116150671] [2023-04-02 06:46:46,701 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:46:46,701 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-04-02 06:46:46,701 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:46:46,701 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-04-02 06:46:46,701 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-04-02 06:46:46,702 INFO L87 Difference]: Start difference. First operand 19197 states and 27772 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 06:46:50,078 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:46:50,078 INFO L93 Difference]: Finished difference Result 38335 states and 55485 transitions. [2023-04-02 06:46:50,078 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-04-02 06:46:50,078 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 06:46:50,078 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:46:50,108 INFO L225 Difference]: With dead ends: 38335 [2023-04-02 06:46:50,109 INFO L226 Difference]: Without dead ends: 19197 [2023-04-02 06:46:50,135 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 06:46:50,135 INFO L413 NwaCegarLoop]: 113 mSDtfsCounter, 388 mSDsluCounter, 56 mSDsCounter, 0 mSdLazyCounter, 246 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 388 SdHoareTripleChecker+Valid, 169 SdHoareTripleChecker+Invalid, 254 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 246 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-04-02 06:46:50,136 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [388 Valid, 169 Invalid, 254 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 246 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-04-02 06:46:50,152 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19197 states. [2023-04-02 06:46:53,288 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19197 to 19197. [2023-04-02 06:46:53,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19197 states, 19193 states have (on average 1.4368259261188976) internal successors, (27577), 19193 states have internal predecessors, (27577), 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 06:46:53,333 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19197 states to 19197 states and 27580 transitions. [2023-04-02 06:46:53,333 INFO L78 Accepts]: Start accepts. Automaton has 19197 states and 27580 transitions. Word has length 100 [2023-04-02 06:46:53,333 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:46:53,333 INFO L495 AbstractCegarLoop]: Abstraction has 19197 states and 27580 transitions. [2023-04-02 06:46:53,333 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 06:46:53,334 INFO L276 IsEmpty]: Start isEmpty. Operand 19197 states and 27580 transitions. [2023-04-02 06:46:53,334 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2023-04-02 06:46:53,334 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:46:53,334 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 06:46:53,334 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-04-02 06:46:53,334 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 06:46:53,335 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:46:53,335 INFO L85 PathProgramCache]: Analyzing trace with hash -1382597072, now seen corresponding path program 1 times [2023-04-02 06:46:53,335 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:46:53,335 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1565883181] [2023-04-02 06:46:53,335 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:46:53,335 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:46:53,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:46:53,612 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:46:53,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:46:53,641 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 06:46:53,642 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:46:53,642 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1565883181] [2023-04-02 06:46:53,642 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1565883181] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:46:53,642 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:46:53,642 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-04-02 06:46:53,642 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1973206524] [2023-04-02 06:46:53,642 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:46:53,642 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-04-02 06:46:53,643 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:46:53,643 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-04-02 06:46:53,643 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-04-02 06:46:53,643 INFO L87 Difference]: Start difference. First operand 19197 states and 27580 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 06:46:57,200 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:46:57,201 INFO L93 Difference]: Finished difference Result 38335 states and 55101 transitions. [2023-04-02 06:46:57,201 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-04-02 06:46:57,201 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 06:46:57,201 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:46:57,231 INFO L225 Difference]: With dead ends: 38335 [2023-04-02 06:46:57,232 INFO L226 Difference]: Without dead ends: 19197 [2023-04-02 06:46:57,247 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 06:46:57,248 INFO L413 NwaCegarLoop]: 113 mSDtfsCounter, 424 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 244 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 424 SdHoareTripleChecker+Valid, 145 SdHoareTripleChecker+Invalid, 252 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 244 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-04-02 06:46:57,248 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [424 Valid, 145 Invalid, 252 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 244 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-04-02 06:46:57,261 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19197 states. [2023-04-02 06:47:00,502 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19197 to 19197. [2023-04-02 06:47:00,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19197 states, 19193 states have (on average 1.4268222789558693) internal successors, (27385), 19193 states have internal predecessors, (27385), 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 06:47:00,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19197 states to 19197 states and 27388 transitions. [2023-04-02 06:47:00,548 INFO L78 Accepts]: Start accepts. Automaton has 19197 states and 27388 transitions. Word has length 100 [2023-04-02 06:47:00,548 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:47:00,548 INFO L495 AbstractCegarLoop]: Abstraction has 19197 states and 27388 transitions. [2023-04-02 06:47:00,548 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 06:47:00,548 INFO L276 IsEmpty]: Start isEmpty. Operand 19197 states and 27388 transitions. [2023-04-02 06:47:00,549 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2023-04-02 06:47:00,549 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:47:00,549 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 06:47:00,549 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-04-02 06:47:00,549 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 06:47:00,550 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:47:00,550 INFO L85 PathProgramCache]: Analyzing trace with hash -2145460779, now seen corresponding path program 1 times [2023-04-02 06:47:00,550 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:47:00,550 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1160152823] [2023-04-02 06:47:00,550 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:47:00,550 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:47:00,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:47:00,833 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:47:00,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:47:00,857 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 06:47:00,857 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:47:00,857 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1160152823] [2023-04-02 06:47:00,859 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1160152823] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:47:00,859 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:47:00,859 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-04-02 06:47:00,859 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [558063139] [2023-04-02 06:47:00,859 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:47:00,859 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-04-02 06:47:00,859 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:47:00,860 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-04-02 06:47:00,860 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-04-02 06:47:00,860 INFO L87 Difference]: Start difference. First operand 19197 states and 27388 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 06:47:04,511 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:47:04,511 INFO L93 Difference]: Finished difference Result 38335 states and 54717 transitions. [2023-04-02 06:47:04,511 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-04-02 06:47:04,511 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 06:47:04,512 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:47:04,536 INFO L225 Difference]: With dead ends: 38335 [2023-04-02 06:47:04,536 INFO L226 Difference]: Without dead ends: 19197 [2023-04-02 06:47:04,549 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 06:47:04,550 INFO L413 NwaCegarLoop]: 113 mSDtfsCounter, 408 mSDsluCounter, 40 mSDsCounter, 0 mSdLazyCounter, 242 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 408 SdHoareTripleChecker+Valid, 153 SdHoareTripleChecker+Invalid, 250 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 242 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-04-02 06:47:04,550 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [408 Valid, 153 Invalid, 250 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 242 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-04-02 06:47:04,565 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19197 states. [2023-04-02 06:47:07,802 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19197 to 19197. [2023-04-02 06:47:07,817 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19197 states, 19193 states have (on average 1.416818631792841) internal successors, (27193), 19193 states have internal predecessors, (27193), 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 06:47:07,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19197 states to 19197 states and 27196 transitions. [2023-04-02 06:47:07,842 INFO L78 Accepts]: Start accepts. Automaton has 19197 states and 27196 transitions. Word has length 100 [2023-04-02 06:47:07,842 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:47:07,842 INFO L495 AbstractCegarLoop]: Abstraction has 19197 states and 27196 transitions. [2023-04-02 06:47:07,842 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 06:47:07,843 INFO L276 IsEmpty]: Start isEmpty. Operand 19197 states and 27196 transitions. [2023-04-02 06:47:07,843 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2023-04-02 06:47:07,843 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:47:07,843 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 06:47:07,843 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-04-02 06:47:07,844 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 06:47:07,844 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:47:07,844 INFO L85 PathProgramCache]: Analyzing trace with hash -2017375472, now seen corresponding path program 1 times [2023-04-02 06:47:07,844 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:47:07,844 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [125512474] [2023-04-02 06:47:07,844 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:47:07,844 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:47:07,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:47:08,266 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:47:08,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:47:08,276 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 06:47:08,276 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:47:08,276 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [125512474] [2023-04-02 06:47:08,276 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [125512474] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:47:08,277 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:47:08,277 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-04-02 06:47:08,277 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [283272131] [2023-04-02 06:47:08,277 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:47:08,277 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-04-02 06:47:08,277 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:47:08,278 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-04-02 06:47:08,278 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-04-02 06:47:08,278 INFO L87 Difference]: Start difference. First operand 19197 states and 27196 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 06:47:13,855 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:47:13,855 INFO L93 Difference]: Finished difference Result 28209 states and 39882 transitions. [2023-04-02 06:47:13,856 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-04-02 06:47:13,856 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 06:47:13,856 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:47:13,893 INFO L225 Difference]: With dead ends: 28209 [2023-04-02 06:47:13,893 INFO L226 Difference]: Without dead ends: 28207 [2023-04-02 06:47:13,898 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 06:47:13,899 INFO L413 NwaCegarLoop]: 230 mSDtfsCounter, 229 mSDsluCounter, 576 mSDsCounter, 0 mSdLazyCounter, 258 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 229 SdHoareTripleChecker+Valid, 806 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 06:47:13,899 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [229 Valid, 806 Invalid, 259 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 258 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-04-02 06:47:13,915 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28207 states. [2023-04-02 06:47:17,596 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28207 to 19453. [2023-04-02 06:47:17,611 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19453 states, 19449 states have (on average 1.4014602293177028) internal successors, (27257), 19449 states have internal predecessors, (27257), 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 06:47:17,638 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19453 states to 19453 states and 27260 transitions. [2023-04-02 06:47:17,638 INFO L78 Accepts]: Start accepts. Automaton has 19453 states and 27260 transitions. Word has length 100 [2023-04-02 06:47:17,638 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:47:17,638 INFO L495 AbstractCegarLoop]: Abstraction has 19453 states and 27260 transitions. [2023-04-02 06:47:17,638 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 06:47:17,638 INFO L276 IsEmpty]: Start isEmpty. Operand 19453 states and 27260 transitions. [2023-04-02 06:47:17,645 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2023-04-02 06:47:17,645 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:47:17,645 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 06:47:17,645 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-04-02 06:47:17,645 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 06:47:17,646 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:47:17,646 INFO L85 PathProgramCache]: Analyzing trace with hash -1328808433, now seen corresponding path program 1 times [2023-04-02 06:47:17,646 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:47:17,646 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [226629559] [2023-04-02 06:47:17,646 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:47:17,646 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:47:17,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:47:18,057 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:47:18,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:47:18,067 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-04-02 06:47:18,067 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:47:18,068 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [226629559] [2023-04-02 06:47:18,068 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [226629559] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:47:18,068 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:47:18,068 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-04-02 06:47:18,068 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [168445685] [2023-04-02 06:47:18,068 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:47:18,068 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-04-02 06:47:18,068 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:47:18,069 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-04-02 06:47:18,069 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2023-04-02 06:47:18,069 INFO L87 Difference]: Start difference. First operand 19453 states and 27260 transitions. Second operand has 10 states, 10 states have (on average 12.6) internal successors, (126), 9 states have internal predecessors, (126), 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 06:47:47,752 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:47:47,752 INFO L93 Difference]: Finished difference Result 158475 states and 222115 transitions. [2023-04-02 06:47:47,753 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-04-02 06:47:47,753 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 12.6) internal successors, (126), 9 states have internal predecessors, (126), 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 135 [2023-04-02 06:47:47,753 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:47:48,017 INFO L225 Difference]: With dead ends: 158475 [2023-04-02 06:47:48,018 INFO L226 Difference]: Without dead ends: 139081 [2023-04-02 06:47:48,066 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 06:47:48,066 INFO L413 NwaCegarLoop]: 293 mSDtfsCounter, 2082 mSDsluCounter, 1569 mSDsCounter, 0 mSdLazyCounter, 417 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2082 SdHoareTripleChecker+Valid, 1862 SdHoareTripleChecker+Invalid, 436 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 417 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-04-02 06:47:48,067 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2082 Valid, 1862 Invalid, 436 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 417 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-04-02 06:47:48,166 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139081 states. [2023-04-02 06:47:59,121 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139081 to 38845. [2023-04-02 06:47:59,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38845 states, 38841 states have (on average 1.397106150717026) internal successors, (54265), 38841 states have internal predecessors, (54265), 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 06:47:59,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38845 states to 38845 states and 54268 transitions. [2023-04-02 06:47:59,209 INFO L78 Accepts]: Start accepts. Automaton has 38845 states and 54268 transitions. Word has length 135 [2023-04-02 06:47:59,209 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:47:59,209 INFO L495 AbstractCegarLoop]: Abstraction has 38845 states and 54268 transitions. [2023-04-02 06:47:59,209 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.6) internal successors, (126), 9 states have internal predecessors, (126), 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 06:47:59,209 INFO L276 IsEmpty]: Start isEmpty. Operand 38845 states and 54268 transitions. [2023-04-02 06:47:59,219 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2023-04-02 06:47:59,219 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:47:59,219 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 06:47:59,219 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-04-02 06:47:59,219 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 06:47:59,220 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:47:59,220 INFO L85 PathProgramCache]: Analyzing trace with hash -1898827051, now seen corresponding path program 1 times [2023-04-02 06:47:59,220 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:47:59,220 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [629458831] [2023-04-02 06:47:59,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:47:59,220 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:47:59,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:47:59,575 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:47:59,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:47:59,606 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2023-04-02 06:47:59,607 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:47:59,607 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [629458831] [2023-04-02 06:47:59,607 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [629458831] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:47:59,607 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:47:59,607 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-04-02 06:47:59,607 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1791642636] [2023-04-02 06:47:59,607 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:47:59,607 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-04-02 06:47:59,607 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:47:59,608 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-04-02 06:47:59,608 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2023-04-02 06:47:59,608 INFO L87 Difference]: Start difference. First operand 38845 states and 54268 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 06:48:41,949 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:48:41,950 INFO L93 Difference]: Finished difference Result 177867 states and 249123 transitions. [2023-04-02 06:48:41,950 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-04-02 06:48:41,950 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 135 [2023-04-02 06:48:41,951 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:48:42,401 INFO L225 Difference]: With dead ends: 177867 [2023-04-02 06:48:42,401 INFO L226 Difference]: Without dead ends: 158473 [2023-04-02 06:48:42,454 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 06:48:42,454 INFO L413 NwaCegarLoop]: 291 mSDtfsCounter, 2198 mSDsluCounter, 1388 mSDsCounter, 0 mSdLazyCounter, 412 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2198 SdHoareTripleChecker+Valid, 1679 SdHoareTripleChecker+Invalid, 431 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 412 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-04-02 06:48:42,455 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2198 Valid, 1679 Invalid, 431 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 412 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-04-02 06:48:42,584 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 158473 states. [2023-04-02 06:49:02,740 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 158473 to 67837. [2023-04-02 06:49:02,791 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 67837 states, 67833 states have (on average 1.3929650759954595) internal successors, (94489), 67833 states have internal predecessors, (94489), 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 06:49:02,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67837 states to 67837 states and 94492 transitions. [2023-04-02 06:49:02,902 INFO L78 Accepts]: Start accepts. Automaton has 67837 states and 94492 transitions. Word has length 135 [2023-04-02 06:49:02,902 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:49:02,902 INFO L495 AbstractCegarLoop]: Abstraction has 67837 states and 94492 transitions. [2023-04-02 06:49:02,902 INFO L496 AbstractCegarLoop]: INTERPOLANT 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) [2023-04-02 06:49:02,902 INFO L276 IsEmpty]: Start isEmpty. Operand 67837 states and 94492 transitions. [2023-04-02 06:49:02,914 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2023-04-02 06:49:02,914 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:49:02,914 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 06:49:02,914 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-04-02 06:49:02,914 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 06:49:02,915 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:49:02,915 INFO L85 PathProgramCache]: Analyzing trace with hash 2098155757, now seen corresponding path program 1 times [2023-04-02 06:49:02,915 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:49:02,915 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [644976647] [2023-04-02 06:49:02,915 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:49:02,915 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:49:02,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:49:03,276 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:49:03,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:49:03,286 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2023-04-02 06:49:03,286 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:49:03,286 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [644976647] [2023-04-02 06:49:03,286 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [644976647] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:49:03,287 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:49:03,287 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-04-02 06:49:03,287 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1467492895] [2023-04-02 06:49:03,287 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:49:03,287 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-04-02 06:49:03,287 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:49:03,288 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-04-02 06:49:03,288 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2023-04-02 06:49:03,288 INFO L87 Difference]: Start difference. First operand 67837 states and 94492 transitions. Second operand has 10 states, 10 states have (on average 12.1) internal successors, (121), 9 states have internal predecessors, (121), 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 06:49:55,345 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:49:55,345 INFO L93 Difference]: Finished difference Result 197259 states and 276131 transitions. [2023-04-02 06:49:55,346 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-04-02 06:49:55,346 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 12.1) internal successors, (121), 9 states have internal predecessors, (121), 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 135 [2023-04-02 06:49:55,346 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:49:55,879 INFO L225 Difference]: With dead ends: 197259 [2023-04-02 06:49:55,880 INFO L226 Difference]: Without dead ends: 177865 [2023-04-02 06:49:55,934 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 06:49:55,935 INFO L413 NwaCegarLoop]: 291 mSDtfsCounter, 2071 mSDsluCounter, 1583 mSDsCounter, 0 mSdLazyCounter, 451 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2071 SdHoareTripleChecker+Valid, 1874 SdHoareTripleChecker+Invalid, 470 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 451 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-04-02 06:49:55,935 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2071 Valid, 1874 Invalid, 470 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 451 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-04-02 06:49:56,078 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 177865 states.