/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-var-start-time.3.ufo.BOUNDED-6.pals.c.v+sep-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-f954360 [2023-04-02 06:04:51,488 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-04-02 06:04:51,489 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-04-02 06:04:51,509 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-04-02 06:04:51,510 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-04-02 06:04:51,510 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-04-02 06:04:51,511 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-04-02 06:04:51,512 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-04-02 06:04:51,513 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-04-02 06:04:51,514 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-04-02 06:04:51,514 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-04-02 06:04:51,515 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-04-02 06:04:51,515 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-04-02 06:04:51,516 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-04-02 06:04:51,516 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-04-02 06:04:51,517 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-04-02 06:04:51,518 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-04-02 06:04:51,518 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-04-02 06:04:51,519 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-04-02 06:04:51,520 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-04-02 06:04:51,521 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-04-02 06:04:51,537 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-04-02 06:04:51,538 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-04-02 06:04:51,538 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-04-02 06:04:51,540 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-04-02 06:04:51,541 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-04-02 06:04:51,541 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-04-02 06:04:51,541 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-04-02 06:04:51,541 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-04-02 06:04:51,542 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-04-02 06:04:51,542 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-04-02 06:04:51,543 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-04-02 06:04:51,543 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-04-02 06:04:51,543 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-04-02 06:04:51,544 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-04-02 06:04:51,544 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-04-02 06:04:51,544 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-04-02 06:04:51,545 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-04-02 06:04:51,545 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-04-02 06:04:51,545 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-04-02 06:04:51,546 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-04-02 06:04:51,546 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 06:04:51,575 INFO L113 SettingsManager]: Loading preferences was successful [2023-04-02 06:04:51,575 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-04-02 06:04:51,576 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-04-02 06:04:51,576 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-04-02 06:04:51,576 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-04-02 06:04:51,576 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-04-02 06:04:51,577 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-04-02 06:04:51,577 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-04-02 06:04:51,577 INFO L138 SettingsManager]: * Use SBE=true [2023-04-02 06:04:51,577 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-04-02 06:04:51,577 INFO L138 SettingsManager]: * sizeof long=4 [2023-04-02 06:04:51,577 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-04-02 06:04:51,577 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-04-02 06:04:51,577 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-04-02 06:04:51,577 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-04-02 06:04:51,578 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-04-02 06:04:51,578 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-04-02 06:04:51,578 INFO L138 SettingsManager]: * sizeof long double=12 [2023-04-02 06:04:51,578 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-04-02 06:04:51,578 INFO L138 SettingsManager]: * Use constant arrays=true [2023-04-02 06:04:51,578 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-04-02 06:04:51,578 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-04-02 06:04:51,578 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-04-02 06:04:51,578 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-04-02 06:04:51,578 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-02 06:04:51,578 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-04-02 06:04:51,579 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-04-02 06:04:51,579 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-04-02 06:04:51,579 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-04-02 06:04:51,579 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-04-02 06:04:51,579 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-04-02 06:04:51,579 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-04-02 06:04:51,579 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-04-02 06:04:51,579 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-04-02 06:04:51,579 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-04-02 06:04:51,579 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-04-02 06:04:51,770 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-04-02 06:04:51,792 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-04-02 06:04:51,794 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-04-02 06:04:51,795 INFO L271 PluginConnector]: Initializing CDTParser... [2023-04-02 06:04:51,795 INFO L275 PluginConnector]: CDTParser initialized [2023-04-02 06:04:51,796 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.3.ufo.BOUNDED-6.pals.c.v+sep-reducer.c [2023-04-02 06:04:52,853 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-04-02 06:04:53,207 INFO L351 CDTParser]: Found 1 translation units. [2023-04-02 06:04:53,208 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.3.ufo.BOUNDED-6.pals.c.v+sep-reducer.c [2023-04-02 06:04:53,229 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/379da39e5/bb717169cdf5441285b23c1c73a78f91/FLAG7b4d07c43 [2023-04-02 06:04:53,242 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/379da39e5/bb717169cdf5441285b23c1c73a78f91 [2023-04-02 06:04:53,244 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-04-02 06:04:53,245 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2023-04-02 06:04:53,247 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-04-02 06:04:53,248 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-04-02 06:04:53,250 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-04-02 06:04:53,250 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.04 06:04:53" (1/1) ... [2023-04-02 06:04:53,251 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7b9bff67 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 06:04:53, skipping insertion in model container [2023-04-02 06:04:53,251 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.04 06:04:53" (1/1) ... [2023-04-02 06:04:53,256 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-04-02 06:04:53,330 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-04-02 06:04:53,561 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-var-start-time.3.ufo.BOUNDED-6.pals.c.v+sep-reducer.c[8424,8437] [2023-04-02 06:04:53,595 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-var-start-time.3.ufo.BOUNDED-6.pals.c.v+sep-reducer.c[12951,12964] [2023-04-02 06:04:53,618 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-var-start-time.3.ufo.BOUNDED-6.pals.c.v+sep-reducer.c[20701,20714] [2023-04-02 06:04:53,643 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-var-start-time.3.ufo.BOUNDED-6.pals.c.v+sep-reducer.c[27792,27805] [2023-04-02 06:04:53,716 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-var-start-time.3.ufo.BOUNDED-6.pals.c.v+sep-reducer.c[49016,49029] [2023-04-02 06:04:53,767 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-var-start-time.3.ufo.BOUNDED-6.pals.c.v+sep-reducer.c[80107,80120] [2023-04-02 06:04:53,969 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-02 06:04:53,985 INFO L203 MainTranslator]: Completed pre-run [2023-04-02 06:04:54,022 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-var-start-time.3.ufo.BOUNDED-6.pals.c.v+sep-reducer.c[8424,8437] [2023-04-02 06:04:54,033 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-var-start-time.3.ufo.BOUNDED-6.pals.c.v+sep-reducer.c[12951,12964] [2023-04-02 06:04:54,048 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-var-start-time.3.ufo.BOUNDED-6.pals.c.v+sep-reducer.c[20701,20714] [2023-04-02 06:04:54,055 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-var-start-time.3.ufo.BOUNDED-6.pals.c.v+sep-reducer.c[27792,27805] [2023-04-02 06:04:54,095 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-var-start-time.3.ufo.BOUNDED-6.pals.c.v+sep-reducer.c[49016,49029] [2023-04-02 06:04:54,130 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-var-start-time.3.ufo.BOUNDED-6.pals.c.v+sep-reducer.c[80107,80120] [2023-04-02 06:04:54,190 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-02 06:04:54,208 INFO L208 MainTranslator]: Completed translation [2023-04-02 06:04:54,209 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 06:04:54 WrapperNode [2023-04-02 06:04:54,209 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-04-02 06:04:54,210 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-04-02 06:04:54,210 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-04-02 06:04:54,210 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-04-02 06:04:54,218 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 06:04:54" (1/1) ... [2023-04-02 06:04:54,218 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 06:04:54" (1/1) ... [2023-04-02 06:04:54,254 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 06:04:54" (1/1) ... [2023-04-02 06:04:54,255 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 06:04:54" (1/1) ... [2023-04-02 06:04:54,312 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 06:04:54" (1/1) ... [2023-04-02 06:04:54,332 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 06:04:54" (1/1) ... [2023-04-02 06:04:54,343 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 06:04:54" (1/1) ... [2023-04-02 06:04:54,352 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 06:04:54" (1/1) ... [2023-04-02 06:04:54,369 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-04-02 06:04:54,371 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-04-02 06:04:54,371 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-04-02 06:04:54,371 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-04-02 06:04:54,372 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 06:04:54" (1/1) ... [2023-04-02 06:04:54,376 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-02 06:04:54,383 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-02 06:04:54,405 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 06:04:54,422 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 06:04:54,432 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2023-04-02 06:04:54,437 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-04-02 06:04:54,437 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2023-04-02 06:04:54,437 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-04-02 06:04:54,437 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2023-04-02 06:04:54,437 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2023-04-02 06:04:54,437 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2023-04-02 06:04:54,437 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2023-04-02 06:04:54,438 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-04-02 06:04:54,438 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2023-04-02 06:04:54,438 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2023-04-02 06:04:54,438 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2023-04-02 06:04:54,438 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-04-02 06:04:54,438 INFO L130 BoogieDeclarations]: Found specification of procedure read [2023-04-02 06:04:54,438 INFO L130 BoogieDeclarations]: Found specification of procedure write [2023-04-02 06:04:54,438 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2023-04-02 06:04:54,438 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2023-04-02 06:04:54,438 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2023-04-02 06:04:54,438 INFO L130 BoogieDeclarations]: Found specification of procedure init [2023-04-02 06:04:54,438 INFO L130 BoogieDeclarations]: Found specification of procedure check [2023-04-02 06:04:54,438 INFO L130 BoogieDeclarations]: Found specification of procedure main [2023-04-02 06:04:54,438 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2023-04-02 06:04:54,439 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-04-02 06:04:54,439 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-04-02 06:04:54,439 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-04-02 06:04:54,439 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-04-02 06:04:54,439 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-04-02 06:04:54,689 INFO L236 CfgBuilder]: Building ICFG [2023-04-02 06:04:54,691 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-04-02 06:04:56,437 INFO L277 CfgBuilder]: Performing block encoding [2023-04-02 06:04:56,448 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-04-02 06:04:56,448 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-04-02 06:04:56,450 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.04 06:04:56 BoogieIcfgContainer [2023-04-02 06:04:56,450 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-04-02 06:04:56,452 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-04-02 06:04:56,452 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-04-02 06:04:56,454 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-04-02 06:04:56,454 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.04 06:04:53" (1/3) ... [2023-04-02 06:04:56,455 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@77f5f03c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.04 06:04:56, skipping insertion in model container [2023-04-02 06:04:56,455 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 06:04:54" (2/3) ... [2023-04-02 06:04:56,455 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@77f5f03c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.04 06:04:56, skipping insertion in model container [2023-04-02 06:04:56,455 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.04 06:04:56" (3/3) ... [2023-04-02 06:04:56,456 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_lcr-var-start-time.3.ufo.BOUNDED-6.pals.c.v+sep-reducer.c [2023-04-02 06:04:56,468 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-04-02 06:04:56,468 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2023-04-02 06:04:56,515 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-04-02 06:04:56,519 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;@20f99a2b, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-04-02 06:04:56,520 INFO L358 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2023-04-02 06:04:56,527 INFO L276 IsEmpty]: Start isEmpty. Operand has 1295 states, 1284 states have (on average 1.7710280373831775) internal successors, (2274), 1290 states have internal predecessors, (2274), 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 06:04:56,543 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2023-04-02 06:04:56,543 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:04:56,544 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] [2023-04-02 06:04:56,544 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting mainErr4ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2023-04-02 06:04:56,548 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:04:56,548 INFO L85 PathProgramCache]: Analyzing trace with hash -2109617246, now seen corresponding path program 1 times [2023-04-02 06:04:56,555 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:04:56,555 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [578648892] [2023-04-02 06:04:56,555 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:04:56,556 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:04:56,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:04:57,999 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:04:58,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:04:58,050 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 06:04:58,050 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:04:58,050 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [578648892] [2023-04-02 06:04:58,051 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [578648892] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:04:58,051 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:04:58,051 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-04-02 06:04:58,052 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2013594664] [2023-04-02 06:04:58,053 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:04:58,055 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-04-02 06:04:58,056 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:04:58,074 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-04-02 06:04:58,075 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-04-02 06:04:58,078 INFO L87 Difference]: Start difference. First operand has 1295 states, 1284 states have (on average 1.7710280373831775) internal successors, (2274), 1290 states have internal predecessors, (2274), 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 6 states, 5 states have (on average 10.6) internal successors, (53), 4 states have internal predecessors, (53), 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 06:05:05,076 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:05:05,077 INFO L93 Difference]: Finished difference Result 2522 states and 4334 transitions. [2023-04-02 06:05:05,078 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-04-02 06:05:05,079 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 10.6) internal successors, (53), 4 states have internal predecessors, (53), 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 56 [2023-04-02 06:05:05,080 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:05:05,099 INFO L225 Difference]: With dead ends: 2522 [2023-04-02 06:05:05,100 INFO L226 Difference]: Without dead ends: 1594 [2023-04-02 06:05:05,108 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2023-04-02 06:05:05,113 INFO L413 NwaCegarLoop]: 1057 mSDtfsCounter, 7095 mSDsluCounter, 509 mSDsCounter, 0 mSdLazyCounter, 3072 mSolverCounterSat, 75 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7095 SdHoareTripleChecker+Valid, 1566 SdHoareTripleChecker+Invalid, 3147 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 75 IncrementalHoareTripleChecker+Valid, 3072 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.7s IncrementalHoareTripleChecker+Time [2023-04-02 06:05:05,114 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7095 Valid, 1566 Invalid, 3147 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [75 Valid, 3072 Invalid, 0 Unknown, 0 Unchecked, 5.7s Time] [2023-04-02 06:05:05,132 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1594 states. [2023-04-02 06:05:05,236 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1594 to 1588. [2023-04-02 06:05:05,239 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1588 states, 1579 states have (on average 1.3090563647878404) internal successors, (2067), 1584 states have internal predecessors, (2067), 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 06:05:05,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1588 states to 1588 states and 2070 transitions. [2023-04-02 06:05:05,246 INFO L78 Accepts]: Start accepts. Automaton has 1588 states and 2070 transitions. Word has length 56 [2023-04-02 06:05:05,246 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:05:05,247 INFO L495 AbstractCegarLoop]: Abstraction has 1588 states and 2070 transitions. [2023-04-02 06:05:05,247 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 10.6) internal successors, (53), 4 states have internal predecessors, (53), 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 06:05:05,247 INFO L276 IsEmpty]: Start isEmpty. Operand 1588 states and 2070 transitions. [2023-04-02 06:05:05,252 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2023-04-02 06:05:05,252 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:05:05,252 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] [2023-04-02 06:05:05,253 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-04-02 06:05:05,253 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting mainErr2ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2023-04-02 06:05:05,254 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:05:05,254 INFO L85 PathProgramCache]: Analyzing trace with hash 1481076219, now seen corresponding path program 1 times [2023-04-02 06:05:05,255 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:05:05,255 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1638102774] [2023-04-02 06:05:05,255 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:05:05,255 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:05:05,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:05:06,427 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:05:06,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:05:06,522 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 06:05:06,522 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:05:06,522 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1638102774] [2023-04-02 06:05:06,522 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1638102774] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:05:06,522 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:05:06,523 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-04-02 06:05:06,523 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [907947741] [2023-04-02 06:05:06,523 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:05:06,524 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-04-02 06:05:06,524 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:05:06,524 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-04-02 06:05:06,525 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-04-02 06:05:06,525 INFO L87 Difference]: Start difference. First operand 1588 states and 2070 transitions. Second operand has 6 states, 5 states have (on average 10.8) internal successors, (54), 4 states have internal predecessors, (54), 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 06:05:11,422 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:05:11,422 INFO L93 Difference]: Finished difference Result 3113 states and 4118 transitions. [2023-04-02 06:05:11,422 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-04-02 06:05:11,423 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 10.8) internal successors, (54), 4 states have internal predecessors, (54), 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 57 [2023-04-02 06:05:11,423 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:05:11,430 INFO L225 Difference]: With dead ends: 3113 [2023-04-02 06:05:11,430 INFO L226 Difference]: Without dead ends: 2032 [2023-04-02 06:05:11,433 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2023-04-02 06:05:11,434 INFO L413 NwaCegarLoop]: 646 mSDtfsCounter, 4604 mSDsluCounter, 312 mSDsCounter, 0 mSdLazyCounter, 2035 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4604 SdHoareTripleChecker+Valid, 958 SdHoareTripleChecker+Invalid, 2071 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 2035 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.0s IncrementalHoareTripleChecker+Time [2023-04-02 06:05:11,434 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4604 Valid, 958 Invalid, 2071 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 2035 Invalid, 0 Unknown, 0 Unchecked, 4.0s Time] [2023-04-02 06:05:11,438 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2032 states. [2023-04-02 06:05:11,507 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2032 to 2022. [2023-04-02 06:05:11,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2022 states, 2013 states have (on average 1.3204172876304023) internal successors, (2658), 2018 states have internal predecessors, (2658), 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 06:05:11,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2022 states to 2022 states and 2661 transitions. [2023-04-02 06:05:11,516 INFO L78 Accepts]: Start accepts. Automaton has 2022 states and 2661 transitions. Word has length 57 [2023-04-02 06:05:11,517 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:05:11,517 INFO L495 AbstractCegarLoop]: Abstraction has 2022 states and 2661 transitions. [2023-04-02 06:05:11,517 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 10.8) internal successors, (54), 4 states have internal predecessors, (54), 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 06:05:11,518 INFO L276 IsEmpty]: Start isEmpty. Operand 2022 states and 2661 transitions. [2023-04-02 06:05:11,520 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2023-04-02 06:05:11,520 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:05:11,520 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] [2023-04-02 06:05:11,520 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-04-02 06:05:11,520 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting mainErr1ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2023-04-02 06:05:11,527 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:05:11,527 INFO L85 PathProgramCache]: Analyzing trace with hash 9471875, now seen corresponding path program 1 times [2023-04-02 06:05:11,527 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:05:11,528 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2079360400] [2023-04-02 06:05:11,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:05:11,528 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:05:11,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:05:12,599 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:05:12,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:05:12,648 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 06:05:12,648 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:05:12,648 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2079360400] [2023-04-02 06:05:12,648 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2079360400] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:05:12,651 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:05:12,651 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-04-02 06:05:12,651 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2123200837] [2023-04-02 06:05:12,651 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:05:12,652 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-04-02 06:05:12,653 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:05:12,653 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-04-02 06:05:12,654 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-04-02 06:05:12,654 INFO L87 Difference]: Start difference. First operand 2022 states and 2661 transitions. Second operand has 6 states, 5 states have (on average 10.8) internal successors, (54), 4 states have internal predecessors, (54), 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 06:05:17,230 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:05:17,231 INFO L93 Difference]: Finished difference Result 4414 states and 5830 transitions. [2023-04-02 06:05:17,231 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-04-02 06:05:17,231 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 10.8) internal successors, (54), 4 states have internal predecessors, (54), 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 57 [2023-04-02 06:05:17,231 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:05:17,245 INFO L225 Difference]: With dead ends: 4414 [2023-04-02 06:05:17,255 INFO L226 Difference]: Without dead ends: 3080 [2023-04-02 06:05:17,258 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2023-04-02 06:05:17,259 INFO L413 NwaCegarLoop]: 630 mSDtfsCounter, 4478 mSDsluCounter, 350 mSDsCounter, 0 mSdLazyCounter, 1935 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4478 SdHoareTripleChecker+Valid, 980 SdHoareTripleChecker+Invalid, 1966 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 1935 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.5s IncrementalHoareTripleChecker+Time [2023-04-02 06:05:17,259 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4478 Valid, 980 Invalid, 1966 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 1935 Invalid, 0 Unknown, 0 Unchecked, 3.5s Time] [2023-04-02 06:05:17,262 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3080 states. [2023-04-02 06:05:17,512 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3080 to 3066. [2023-04-02 06:05:17,516 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3066 states, 3057 states have (on average 1.3235197906444227) internal successors, (4046), 3062 states have internal predecessors, (4046), 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 06:05:17,527 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3066 states to 3066 states and 4049 transitions. [2023-04-02 06:05:17,527 INFO L78 Accepts]: Start accepts. Automaton has 3066 states and 4049 transitions. Word has length 57 [2023-04-02 06:05:17,529 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:05:17,529 INFO L495 AbstractCegarLoop]: Abstraction has 3066 states and 4049 transitions. [2023-04-02 06:05:17,529 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 10.8) internal successors, (54), 4 states have internal predecessors, (54), 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 06:05:17,530 INFO L276 IsEmpty]: Start isEmpty. Operand 3066 states and 4049 transitions. [2023-04-02 06:05:17,532 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2023-04-02 06:05:17,532 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:05:17,532 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] [2023-04-02 06:05:17,533 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-04-02 06:05:17,533 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting mainErr1ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2023-04-02 06:05:17,533 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:05:17,533 INFO L85 PathProgramCache]: Analyzing trace with hash 1495817125, now seen corresponding path program 1 times [2023-04-02 06:05:17,534 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:05:17,534 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1440742406] [2023-04-02 06:05:17,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:05:17,534 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:05:17,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:05:18,785 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:05:18,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:05:18,844 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 06:05:18,844 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:05:18,844 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1440742406] [2023-04-02 06:05:18,844 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1440742406] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:05:18,845 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:05:18,845 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-04-02 06:05:18,845 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [521928632] [2023-04-02 06:05:18,846 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:05:18,847 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-04-02 06:05:18,847 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:05:18,847 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-04-02 06:05:18,848 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2023-04-02 06:05:18,848 INFO L87 Difference]: Start difference. First operand 3066 states and 4049 transitions. Second operand has 9 states, 8 states have (on average 7.0) internal successors, (56), 7 states have internal predecessors, (56), 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 06:05:24,151 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:05:24,152 INFO L93 Difference]: Finished difference Result 5203 states and 7151 transitions. [2023-04-02 06:05:24,152 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-04-02 06:05:24,152 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 7.0) internal successors, (56), 7 states have internal predecessors, (56), 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 59 [2023-04-02 06:05:24,153 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:05:24,201 INFO L225 Difference]: With dead ends: 5203 [2023-04-02 06:05:24,202 INFO L226 Difference]: Without dead ends: 4499 [2023-04-02 06:05:24,205 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=74, Invalid=166, Unknown=0, NotChecked=0, Total=240 [2023-04-02 06:05:24,211 INFO L413 NwaCegarLoop]: 669 mSDtfsCounter, 5108 mSDsluCounter, 1559 mSDsCounter, 0 mSdLazyCounter, 3123 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5108 SdHoareTripleChecker+Valid, 2228 SdHoareTripleChecker+Invalid, 3142 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 3123 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.0s IncrementalHoareTripleChecker+Time [2023-04-02 06:05:24,211 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5108 Valid, 2228 Invalid, 3142 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 3123 Invalid, 0 Unknown, 0 Unchecked, 4.0s Time] [2023-04-02 06:05:24,217 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4499 states. [2023-04-02 06:05:24,502 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4499 to 3066. [2023-04-02 06:05:24,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3066 states, 3057 states have (on average 1.3231926725547922) internal successors, (4045), 3062 states have internal predecessors, (4045), 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 06:05:24,511 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3066 states to 3066 states and 4048 transitions. [2023-04-02 06:05:24,512 INFO L78 Accepts]: Start accepts. Automaton has 3066 states and 4048 transitions. Word has length 59 [2023-04-02 06:05:24,512 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:05:24,512 INFO L495 AbstractCegarLoop]: Abstraction has 3066 states and 4048 transitions. [2023-04-02 06:05:24,513 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 7.0) internal successors, (56), 7 states have internal predecessors, (56), 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 06:05:24,513 INFO L276 IsEmpty]: Start isEmpty. Operand 3066 states and 4048 transitions. [2023-04-02 06:05:24,515 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2023-04-02 06:05:24,515 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:05:24,516 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] [2023-04-02 06:05:24,516 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-04-02 06:05:24,516 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting mainErr2ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2023-04-02 06:05:24,516 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:05:24,516 INFO L85 PathProgramCache]: Analyzing trace with hash -1191753371, now seen corresponding path program 1 times [2023-04-02 06:05:24,517 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:05:24,517 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1658903918] [2023-04-02 06:05:24,517 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:05:24,517 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:05:24,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:05:25,760 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:05:25,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:05:25,807 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 06:05:25,809 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:05:25,814 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1658903918] [2023-04-02 06:05:25,814 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1658903918] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:05:25,814 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:05:25,814 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-04-02 06:05:25,814 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [372367302] [2023-04-02 06:05:25,814 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:05:25,815 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-04-02 06:05:25,815 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:05:25,816 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-04-02 06:05:25,816 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2023-04-02 06:05:25,816 INFO L87 Difference]: Start difference. First operand 3066 states and 4048 transitions. Second operand has 10 states, 9 states have (on average 6.222222222222222) internal successors, (56), 8 states have internal predecessors, (56), 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 06:05:31,047 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:05:31,048 INFO L93 Difference]: Finished difference Result 4615 states and 6238 transitions. [2023-04-02 06:05:31,049 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-04-02 06:05:31,049 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 6.222222222222222) internal successors, (56), 8 states have internal predecessors, (56), 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 59 [2023-04-02 06:05:31,050 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:05:31,073 INFO L225 Difference]: With dead ends: 4615 [2023-04-02 06:05:31,101 INFO L226 Difference]: Without dead ends: 4609 [2023-04-02 06:05:31,104 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 87 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=156, Invalid=396, Unknown=0, NotChecked=0, Total=552 [2023-04-02 06:05:31,105 INFO L413 NwaCegarLoop]: 663 mSDtfsCounter, 6651 mSDsluCounter, 2201 mSDsCounter, 0 mSdLazyCounter, 3821 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6651 SdHoareTripleChecker+Valid, 2864 SdHoareTripleChecker+Invalid, 3866 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 3821 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.8s IncrementalHoareTripleChecker+Time [2023-04-02 06:05:31,106 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6651 Valid, 2864 Invalid, 3866 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [45 Valid, 3821 Invalid, 0 Unknown, 0 Unchecked, 3.8s Time] [2023-04-02 06:05:31,110 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4609 states. [2023-04-02 06:05:31,309 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4609 to 3066. [2023-04-02 06:05:31,313 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3066 states, 3057 states have (on average 1.322865554465162) internal successors, (4044), 3062 states have internal predecessors, (4044), 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 06:05:31,323 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3066 states to 3066 states and 4047 transitions. [2023-04-02 06:05:31,324 INFO L78 Accepts]: Start accepts. Automaton has 3066 states and 4047 transitions. Word has length 59 [2023-04-02 06:05:31,324 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:05:31,324 INFO L495 AbstractCegarLoop]: Abstraction has 3066 states and 4047 transitions. [2023-04-02 06:05:31,324 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 6.222222222222222) internal successors, (56), 8 states have internal predecessors, (56), 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 06:05:31,324 INFO L276 IsEmpty]: Start isEmpty. Operand 3066 states and 4047 transitions. [2023-04-02 06:05:31,326 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2023-04-02 06:05:31,326 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:05:31,327 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] [2023-04-02 06:05:31,327 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-04-02 06:05:31,327 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting mainErr4ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2023-04-02 06:05:31,328 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:05:31,328 INFO L85 PathProgramCache]: Analyzing trace with hash 2106213882, now seen corresponding path program 1 times [2023-04-02 06:05:31,328 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:05:31,328 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [84075450] [2023-04-02 06:05:31,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:05:31,328 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:05:31,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:05:32,445 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:05:32,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:05:32,508 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 06:05:32,508 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:05:32,508 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [84075450] [2023-04-02 06:05:32,508 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [84075450] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:05:32,508 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:05:32,508 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-04-02 06:05:32,508 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [384434465] [2023-04-02 06:05:32,508 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:05:32,509 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-04-02 06:05:32,509 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:05:32,509 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-04-02 06:05:32,509 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2023-04-02 06:05:32,509 INFO L87 Difference]: Start difference. First operand 3066 states and 4047 transitions. Second operand has 10 states, 9 states have (on average 6.222222222222222) internal successors, (56), 8 states have internal predecessors, (56), 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 06:05:38,443 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:05:38,443 INFO L93 Difference]: Finished difference Result 6049 states and 8308 transitions. [2023-04-02 06:05:38,444 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-04-02 06:05:38,444 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 6.222222222222222) internal successors, (56), 8 states have internal predecessors, (56), 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 59 [2023-04-02 06:05:38,444 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:05:38,460 INFO L225 Difference]: With dead ends: 6049 [2023-04-02 06:05:38,460 INFO L226 Difference]: Without dead ends: 5479 [2023-04-02 06:05:38,479 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 88 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=143, Invalid=363, Unknown=0, NotChecked=0, Total=506 [2023-04-02 06:05:38,480 INFO L413 NwaCegarLoop]: 740 mSDtfsCounter, 5418 mSDsluCounter, 2380 mSDsCounter, 0 mSdLazyCounter, 4676 mSolverCounterSat, 84 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5418 SdHoareTripleChecker+Valid, 3120 SdHoareTripleChecker+Invalid, 4760 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 84 IncrementalHoareTripleChecker+Valid, 4676 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.6s IncrementalHoareTripleChecker+Time [2023-04-02 06:05:38,480 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5418 Valid, 3120 Invalid, 4760 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [84 Valid, 4676 Invalid, 0 Unknown, 0 Unchecked, 4.6s Time] [2023-04-02 06:05:38,500 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5479 states. [2023-04-02 06:05:38,725 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5479 to 3066. [2023-04-02 06:05:38,729 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3066 states, 3057 states have (on average 1.3225384363755315) internal successors, (4043), 3062 states have internal predecessors, (4043), 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 06:05:38,732 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3066 states to 3066 states and 4046 transitions. [2023-04-02 06:05:38,733 INFO L78 Accepts]: Start accepts. Automaton has 3066 states and 4046 transitions. Word has length 59 [2023-04-02 06:05:38,733 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:05:38,733 INFO L495 AbstractCegarLoop]: Abstraction has 3066 states and 4046 transitions. [2023-04-02 06:05:38,733 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 6.222222222222222) internal successors, (56), 8 states have internal predecessors, (56), 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 06:05:38,733 INFO L276 IsEmpty]: Start isEmpty. Operand 3066 states and 4046 transitions. [2023-04-02 06:05:38,735 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2023-04-02 06:05:38,735 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:05:38,735 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] [2023-04-02 06:05:38,735 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-04-02 06:05:38,735 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting mainErr2ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2023-04-02 06:05:38,735 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:05:38,736 INFO L85 PathProgramCache]: Analyzing trace with hash -1735868852, now seen corresponding path program 1 times [2023-04-02 06:05:38,736 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:05:38,736 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [16190173] [2023-04-02 06:05:38,736 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:05:38,736 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:05:38,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:05:39,814 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:05:39,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:05:39,830 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 06:05:39,830 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:05:39,830 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [16190173] [2023-04-02 06:05:39,830 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [16190173] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:05:39,831 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:05:39,831 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-04-02 06:05:39,831 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1170288392] [2023-04-02 06:05:39,831 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:05:39,831 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-04-02 06:05:39,831 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:05:39,832 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-04-02 06:05:39,832 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-04-02 06:05:39,832 INFO L87 Difference]: Start difference. First operand 3066 states and 4046 transitions. Second operand has 4 states, 4 states have (on average 14.25) internal successors, (57), 3 states have internal predecessors, (57), 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 06:05:43,520 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:05:43,522 INFO L93 Difference]: Finished difference Result 3996 states and 5469 transitions. [2023-04-02 06:05:43,523 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-04-02 06:05:43,523 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.25) internal successors, (57), 3 states have internal predecessors, (57), 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 60 [2023-04-02 06:05:43,524 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:05:43,531 INFO L225 Difference]: With dead ends: 3996 [2023-04-02 06:05:43,531 INFO L226 Difference]: Without dead ends: 3096 [2023-04-02 06:05:43,533 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-04-02 06:05:43,535 INFO L413 NwaCegarLoop]: 1198 mSDtfsCounter, 598 mSDsluCounter, 601 mSDsCounter, 0 mSdLazyCounter, 1237 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 598 SdHoareTripleChecker+Valid, 1799 SdHoareTripleChecker+Invalid, 1254 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 1237 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.4s IncrementalHoareTripleChecker+Time [2023-04-02 06:05:43,535 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [598 Valid, 1799 Invalid, 1254 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 1237 Invalid, 0 Unknown, 0 Unchecked, 3.4s Time] [2023-04-02 06:05:43,538 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3096 states. [2023-04-02 06:05:43,781 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3096 to 3094. [2023-04-02 06:05:43,785 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3094 states, 3085 states have (on average 1.3471636952998378) internal successors, (4156), 3090 states have internal predecessors, (4156), 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 06:05:43,789 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3094 states to 3094 states and 4159 transitions. [2023-04-02 06:05:43,789 INFO L78 Accepts]: Start accepts. Automaton has 3094 states and 4159 transitions. Word has length 60 [2023-04-02 06:05:43,789 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:05:43,789 INFO L495 AbstractCegarLoop]: Abstraction has 3094 states and 4159 transitions. [2023-04-02 06:05:43,789 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.25) internal successors, (57), 3 states have internal predecessors, (57), 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 06:05:43,790 INFO L276 IsEmpty]: Start isEmpty. Operand 3094 states and 4159 transitions. [2023-04-02 06:05:43,792 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2023-04-02 06:05:43,792 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:05:43,792 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] [2023-04-02 06:05:43,792 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-04-02 06:05:43,792 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting mainErr4ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2023-04-02 06:05:43,792 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:05:43,792 INFO L85 PathProgramCache]: Analyzing trace with hash 528167772, now seen corresponding path program 1 times [2023-04-02 06:05:43,792 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:05:43,793 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1899053815] [2023-04-02 06:05:43,793 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:05:43,793 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:05:43,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:05:44,528 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:05:44,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:05:44,548 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 06:05:44,548 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:05:44,548 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1899053815] [2023-04-02 06:05:44,548 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1899053815] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:05:44,548 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:05:44,548 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-04-02 06:05:44,548 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [542340589] [2023-04-02 06:05:44,548 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:05:44,549 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-04-02 06:05:44,549 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:05:44,549 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-04-02 06:05:44,549 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-04-02 06:05:44,549 INFO L87 Difference]: Start difference. First operand 3094 states and 4159 transitions. Second operand has 4 states, 4 states have (on average 14.25) internal successors, (57), 3 states have internal predecessors, (57), 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 06:05:48,184 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:05:48,185 INFO L93 Difference]: Finished difference Result 4790 states and 6716 transitions. [2023-04-02 06:05:48,185 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-04-02 06:05:48,185 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.25) internal successors, (57), 3 states have internal predecessors, (57), 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 60 [2023-04-02 06:05:48,186 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:05:48,195 INFO L225 Difference]: With dead ends: 4790 [2023-04-02 06:05:48,195 INFO L226 Difference]: Without dead ends: 3513 [2023-04-02 06:05:48,198 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-04-02 06:05:48,198 INFO L413 NwaCegarLoop]: 1171 mSDtfsCounter, 576 mSDsluCounter, 607 mSDsCounter, 0 mSdLazyCounter, 1209 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 576 SdHoareTripleChecker+Valid, 1778 SdHoareTripleChecker+Invalid, 1224 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 1209 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2023-04-02 06:05:48,198 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [576 Valid, 1778 Invalid, 1224 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 1209 Invalid, 0 Unknown, 0 Unchecked, 3.2s Time] [2023-04-02 06:05:48,202 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3513 states. [2023-04-02 06:05:48,504 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3513 to 3511. [2023-04-02 06:05:48,509 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3511 states, 3502 states have (on average 1.3700742432895487) internal successors, (4798), 3507 states have internal predecessors, (4798), 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 06:05:48,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3511 states to 3511 states and 4801 transitions. [2023-04-02 06:05:48,518 INFO L78 Accepts]: Start accepts. Automaton has 3511 states and 4801 transitions. Word has length 60 [2023-04-02 06:05:48,518 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:05:48,518 INFO L495 AbstractCegarLoop]: Abstraction has 3511 states and 4801 transitions. [2023-04-02 06:05:48,519 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.25) internal successors, (57), 3 states have internal predecessors, (57), 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 06:05:48,519 INFO L276 IsEmpty]: Start isEmpty. Operand 3511 states and 4801 transitions. [2023-04-02 06:05:48,523 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2023-04-02 06:05:48,523 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:05:48,523 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] [2023-04-02 06:05:48,523 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-04-02 06:05:48,523 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting mainErr1ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2023-04-02 06:05:48,523 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:05:48,524 INFO L85 PathProgramCache]: Analyzing trace with hash 1938351468, now seen corresponding path program 1 times [2023-04-02 06:05:48,524 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:05:48,524 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1837005205] [2023-04-02 06:05:48,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:05:48,524 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:05:48,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:05:49,417 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:05:49,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:05:49,434 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 06:05:49,435 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:05:49,435 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1837005205] [2023-04-02 06:05:49,435 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1837005205] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:05:49,435 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:05:49,435 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-04-02 06:05:49,435 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [522518350] [2023-04-02 06:05:49,435 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:05:49,435 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-04-02 06:05:49,436 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:05:49,436 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-04-02 06:05:49,436 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-04-02 06:05:49,436 INFO L87 Difference]: Start difference. First operand 3511 states and 4801 transitions. Second operand has 4 states, 4 states have (on average 14.25) internal successors, (57), 3 states have internal predecessors, (57), 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 06:05:53,649 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:05:53,649 INFO L93 Difference]: Finished difference Result 7493 states and 10505 transitions. [2023-04-02 06:05:53,650 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-04-02 06:05:53,656 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.25) internal successors, (57), 3 states have internal predecessors, (57), 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 60 [2023-04-02 06:05:53,657 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:05:53,665 INFO L225 Difference]: With dead ends: 7493 [2023-04-02 06:05:53,665 INFO L226 Difference]: Without dead ends: 5084 [2023-04-02 06:05:53,668 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-04-02 06:05:53,669 INFO L413 NwaCegarLoop]: 1217 mSDtfsCounter, 657 mSDsluCounter, 754 mSDsCounter, 0 mSdLazyCounter, 1302 mSolverCounterSat, 44 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 657 SdHoareTripleChecker+Valid, 1971 SdHoareTripleChecker+Invalid, 1346 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 1302 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.6s IncrementalHoareTripleChecker+Time [2023-04-02 06:05:53,669 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [657 Valid, 1971 Invalid, 1346 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [44 Valid, 1302 Invalid, 0 Unknown, 0 Unchecked, 3.6s Time] [2023-04-02 06:05:53,672 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5084 states. [2023-04-02 06:05:54,158 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5084 to 5078. [2023-04-02 06:05:54,164 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5078 states, 5069 states have (on average 1.3681199447622805) internal successors, (6935), 5074 states have internal predecessors, (6935), 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 06:05:54,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5078 states to 5078 states and 6938 transitions. [2023-04-02 06:05:54,171 INFO L78 Accepts]: Start accepts. Automaton has 5078 states and 6938 transitions. Word has length 60 [2023-04-02 06:05:54,171 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:05:54,171 INFO L495 AbstractCegarLoop]: Abstraction has 5078 states and 6938 transitions. [2023-04-02 06:05:54,171 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.25) internal successors, (57), 3 states have internal predecessors, (57), 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 06:05:54,172 INFO L276 IsEmpty]: Start isEmpty. Operand 5078 states and 6938 transitions. [2023-04-02 06:05:54,174 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2023-04-02 06:05:54,174 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:05:54,174 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] [2023-04-02 06:05:54,174 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-04-02 06:05:54,174 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting mainErr1ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2023-04-02 06:05:54,175 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:05:54,175 INFO L85 PathProgramCache]: Analyzing trace with hash -1975277373, now seen corresponding path program 1 times [2023-04-02 06:05:54,175 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:05:54,175 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1942055061] [2023-04-02 06:05:54,175 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:05:54,175 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:05:54,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:05:55,052 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:05:55,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:05:55,073 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 06:05:55,073 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:05:55,073 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1942055061] [2023-04-02 06:05:55,073 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1942055061] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:05:55,073 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:05:55,073 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-04-02 06:05:55,074 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2005022144] [2023-04-02 06:05:55,074 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:05:55,074 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-04-02 06:05:55,074 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:05:55,074 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-04-02 06:05:55,074 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-04-02 06:05:55,075 INFO L87 Difference]: Start difference. First operand 5078 states and 6938 transitions. Second operand has 4 states, 4 states have (on average 14.5) internal successors, (58), 3 states have internal predecessors, (58), 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 06:05:59,477 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:05:59,477 INFO L93 Difference]: Finished difference Result 9712 states and 13457 transitions. [2023-04-02 06:05:59,478 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-04-02 06:05:59,478 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.5) internal successors, (58), 3 states have internal predecessors, (58), 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 61 [2023-04-02 06:05:59,479 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:05:59,488 INFO L225 Difference]: With dead ends: 9712 [2023-04-02 06:05:59,488 INFO L226 Difference]: Without dead ends: 5164 [2023-04-02 06:05:59,494 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-04-02 06:05:59,495 INFO L413 NwaCegarLoop]: 1029 mSDtfsCounter, 894 mSDsluCounter, 481 mSDsCounter, 0 mSdLazyCounter, 1284 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 894 SdHoareTripleChecker+Valid, 1510 SdHoareTripleChecker+Invalid, 1300 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 1284 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2023-04-02 06:05:59,495 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [894 Valid, 1510 Invalid, 1300 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 1284 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2023-04-02 06:05:59,498 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5164 states. [2023-04-02 06:05:59,954 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5164 to 4094. [2023-04-02 06:05:59,959 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4094 states, 4085 states have (on average 1.3850673194614442) internal successors, (5658), 4090 states have internal predecessors, (5658), 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 06:05:59,964 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4094 states to 4094 states and 5661 transitions. [2023-04-02 06:05:59,964 INFO L78 Accepts]: Start accepts. Automaton has 4094 states and 5661 transitions. Word has length 61 [2023-04-02 06:05:59,964 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:05:59,964 INFO L495 AbstractCegarLoop]: Abstraction has 4094 states and 5661 transitions. [2023-04-02 06:05:59,965 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.5) internal successors, (58), 3 states have internal predecessors, (58), 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 06:05:59,965 INFO L276 IsEmpty]: Start isEmpty. Operand 4094 states and 5661 transitions. [2023-04-02 06:05:59,966 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2023-04-02 06:05:59,966 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:05:59,967 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] [2023-04-02 06:05:59,967 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-04-02 06:05:59,967 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting mainErr5ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2023-04-02 06:05:59,967 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:05:59,967 INFO L85 PathProgramCache]: Analyzing trace with hash 1967324081, now seen corresponding path program 1 times [2023-04-02 06:05:59,967 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:05:59,968 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [457042922] [2023-04-02 06:05:59,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:05:59,968 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:05:59,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:06:01,033 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:06:01,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:06:01,085 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 06:06:01,085 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:06:01,085 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [457042922] [2023-04-02 06:06:01,085 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [457042922] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:06:01,086 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:06:01,086 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-04-02 06:06:01,086 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [624253818] [2023-04-02 06:06:01,086 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:06:01,086 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-04-02 06:06:01,086 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:06:01,087 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-04-02 06:06:01,087 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-04-02 06:06:01,087 INFO L87 Difference]: Start difference. First operand 4094 states and 5661 transitions. Second operand has 4 states, 4 states have (on average 14.5) internal successors, (58), 3 states have internal predecessors, (58), 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 06:06:04,740 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:06:04,741 INFO L93 Difference]: Finished difference Result 7989 states and 11284 transitions. [2023-04-02 06:06:04,741 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-04-02 06:06:04,741 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.5) internal successors, (58), 3 states have internal predecessors, (58), 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 61 [2023-04-02 06:06:04,742 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:06:04,778 INFO L225 Difference]: With dead ends: 7989 [2023-04-02 06:06:04,778 INFO L226 Difference]: Without dead ends: 4559 [2023-04-02 06:06:04,784 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-04-02 06:06:04,785 INFO L413 NwaCegarLoop]: 768 mSDtfsCounter, 724 mSDsluCounter, 297 mSDsCounter, 0 mSdLazyCounter, 880 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 724 SdHoareTripleChecker+Valid, 1065 SdHoareTripleChecker+Invalid, 888 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 880 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2023-04-02 06:06:04,785 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [724 Valid, 1065 Invalid, 888 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 880 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2023-04-02 06:06:04,789 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4559 states. [2023-04-02 06:06:05,238 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4559 to 3673. [2023-04-02 06:06:05,242 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3673 states, 3665 states have (on average 1.4005457025920873) internal successors, (5133), 3669 states have internal predecessors, (5133), 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 06:06:05,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3673 states to 3673 states and 5136 transitions. [2023-04-02 06:06:05,248 INFO L78 Accepts]: Start accepts. Automaton has 3673 states and 5136 transitions. Word has length 61 [2023-04-02 06:06:05,248 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:06:05,248 INFO L495 AbstractCegarLoop]: Abstraction has 3673 states and 5136 transitions. [2023-04-02 06:06:05,248 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.5) internal successors, (58), 3 states have internal predecessors, (58), 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 06:06:05,248 INFO L276 IsEmpty]: Start isEmpty. Operand 3673 states and 5136 transitions. [2023-04-02 06:06:05,250 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2023-04-02 06:06:05,250 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:06:05,250 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] [2023-04-02 06:06:05,250 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-04-02 06:06:05,250 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2023-04-02 06:06:05,250 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:06:05,250 INFO L85 PathProgramCache]: Analyzing trace with hash 191410407, now seen corresponding path program 1 times [2023-04-02 06:06:05,251 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:06:05,251 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [605083966] [2023-04-02 06:06:05,251 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:06:05,251 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:06:05,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:06:06,789 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:06:06,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:06:06,806 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 06:06:06,806 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:06:06,806 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [605083966] [2023-04-02 06:06:06,806 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [605083966] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:06:06,806 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:06:06,807 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-04-02 06:06:06,807 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [743796953] [2023-04-02 06:06:06,807 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:06:06,807 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-04-02 06:06:06,807 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:06:06,808 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-04-02 06:06:06,808 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2023-04-02 06:06:06,808 INFO L87 Difference]: Start difference. First operand 3673 states and 5136 transitions. Second operand has 11 states, 11 states have (on average 5.2727272727272725) internal successors, (58), 10 states have internal predecessors, (58), 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 06:06:12,849 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:06:12,850 INFO L93 Difference]: Finished difference Result 6268 states and 8834 transitions. [2023-04-02 06:06:12,850 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-04-02 06:06:12,850 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 5.2727272727272725) internal successors, (58), 10 states have internal predecessors, (58), 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 61 [2023-04-02 06:06:12,850 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:06:12,886 INFO L225 Difference]: With dead ends: 6268 [2023-04-02 06:06:12,886 INFO L226 Difference]: Without dead ends: 6168 [2023-04-02 06:06:12,888 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=120, Invalid=300, Unknown=0, NotChecked=0, Total=420 [2023-04-02 06:06:12,888 INFO L413 NwaCegarLoop]: 805 mSDtfsCounter, 4117 mSDsluCounter, 1889 mSDsCounter, 0 mSdLazyCounter, 1468 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4117 SdHoareTripleChecker+Valid, 2694 SdHoareTripleChecker+Invalid, 1482 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 1468 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2023-04-02 06:06:12,888 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4117 Valid, 2694 Invalid, 1482 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 1468 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2023-04-02 06:06:12,892 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6168 states. [2023-04-02 06:06:13,447 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6168 to 3623. [2023-04-02 06:06:13,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3623 states, 3617 states have (on average 1.402267072159248) internal successors, (5072), 3619 states have internal predecessors, (5072), 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 06:06:13,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3623 states to 3623 states and 5075 transitions. [2023-04-02 06:06:13,457 INFO L78 Accepts]: Start accepts. Automaton has 3623 states and 5075 transitions. Word has length 61 [2023-04-02 06:06:13,457 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:06:13,457 INFO L495 AbstractCegarLoop]: Abstraction has 3623 states and 5075 transitions. [2023-04-02 06:06:13,457 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 5.2727272727272725) internal successors, (58), 10 states have internal predecessors, (58), 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 06:06:13,457 INFO L276 IsEmpty]: Start isEmpty. Operand 3623 states and 5075 transitions. [2023-04-02 06:06:13,458 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2023-04-02 06:06:13,459 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:06:13,459 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] [2023-04-02 06:06:13,459 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-04-02 06:06:13,459 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting mainErr3ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2023-04-02 06:06:13,459 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:06:13,459 INFO L85 PathProgramCache]: Analyzing trace with hash 2091462536, now seen corresponding path program 1 times [2023-04-02 06:06:13,460 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:06:13,460 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1188964005] [2023-04-02 06:06:13,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:06:13,460 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:06:13,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:06:14,369 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:06:14,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:06:14,385 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 06:06:14,385 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:06:14,386 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1188964005] [2023-04-02 06:06:14,386 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1188964005] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:06:14,386 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:06:14,386 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-04-02 06:06:14,386 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2009040668] [2023-04-02 06:06:14,386 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:06:14,386 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-04-02 06:06:14,386 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:06:14,387 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-04-02 06:06:14,387 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-04-02 06:06:14,387 INFO L87 Difference]: Start difference. First operand 3623 states and 5075 transitions. Second operand has 4 states, 4 states have (on average 14.5) internal successors, (58), 3 states have internal predecessors, (58), 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 06:06:16,933 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:06:16,933 INFO L93 Difference]: Finished difference Result 7372 states and 10498 transitions. [2023-04-02 06:06:16,934 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-04-02 06:06:16,934 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.5) internal successors, (58), 3 states have internal predecessors, (58), 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 61 [2023-04-02 06:06:16,934 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:06:16,941 INFO L225 Difference]: With dead ends: 7372 [2023-04-02 06:06:16,941 INFO L226 Difference]: Without dead ends: 4143 [2023-04-02 06:06:16,946 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-04-02 06:06:16,946 INFO L413 NwaCegarLoop]: 530 mSDtfsCounter, 513 mSDsluCounter, 217 mSDsCounter, 0 mSdLazyCounter, 617 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 513 SdHoareTripleChecker+Valid, 747 SdHoareTripleChecker+Invalid, 624 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 617 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2023-04-02 06:06:16,947 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [513 Valid, 747 Invalid, 624 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 617 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2023-04-02 06:06:16,950 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4143 states. [2023-04-02 06:06:17,455 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4143 to 3338. [2023-04-02 06:06:17,459 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3338 states, 3333 states have (on average 1.4146414641464147) internal successors, (4715), 3334 states have internal predecessors, (4715), 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 06:06:17,464 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3338 states to 3338 states and 4718 transitions. [2023-04-02 06:06:17,464 INFO L78 Accepts]: Start accepts. Automaton has 3338 states and 4718 transitions. Word has length 61 [2023-04-02 06:06:17,464 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:06:17,464 INFO L495 AbstractCegarLoop]: Abstraction has 3338 states and 4718 transitions. [2023-04-02 06:06:17,464 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.5) internal successors, (58), 3 states have internal predecessors, (58), 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 06:06:17,464 INFO L276 IsEmpty]: Start isEmpty. Operand 3338 states and 4718 transitions. [2023-04-02 06:06:17,465 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2023-04-02 06:06:17,465 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:06:17,465 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] [2023-04-02 06:06:17,465 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-04-02 06:06:17,466 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting mainErr1ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2023-04-02 06:06:17,466 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:06:17,466 INFO L85 PathProgramCache]: Analyzing trace with hash 1118005105, now seen corresponding path program 1 times [2023-04-02 06:06:17,466 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:06:17,466 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1076725197] [2023-04-02 06:06:17,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:06:17,466 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:06:17,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:06:18,832 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:06:18,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:06:18,862 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 06:06:18,862 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:06:18,862 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1076725197] [2023-04-02 06:06:18,862 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1076725197] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:06:18,862 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:06:18,862 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2023-04-02 06:06:18,863 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1502906997] [2023-04-02 06:06:18,863 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:06:18,863 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-04-02 06:06:18,863 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:06:18,863 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-04-02 06:06:18,864 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=130, Unknown=0, NotChecked=0, Total=156 [2023-04-02 06:06:18,864 INFO L87 Difference]: Start difference. First operand 3338 states and 4718 transitions. Second operand has 13 states, 13 states have (on average 4.538461538461538) internal successors, (59), 12 states have internal predecessors, (59), 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 06:06:26,720 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:06:26,736 INFO L93 Difference]: Finished difference Result 7146 states and 10101 transitions. [2023-04-02 06:06:26,737 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2023-04-02 06:06:26,737 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 4.538461538461538) internal successors, (59), 12 states have internal predecessors, (59), 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 62 [2023-04-02 06:06:26,738 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:06:26,748 INFO L225 Difference]: With dead ends: 7146 [2023-04-02 06:06:26,749 INFO L226 Difference]: Without dead ends: 7067 [2023-04-02 06:06:26,756 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 128 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=242, Invalid=688, Unknown=0, NotChecked=0, Total=930 [2023-04-02 06:06:26,760 INFO L413 NwaCegarLoop]: 1093 mSDtfsCounter, 3125 mSDsluCounter, 4874 mSDsCounter, 0 mSdLazyCounter, 2565 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3125 SdHoareTripleChecker+Valid, 5967 SdHoareTripleChecker+Invalid, 2590 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 2565 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.0s IncrementalHoareTripleChecker+Time [2023-04-02 06:06:26,761 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3125 Valid, 5967 Invalid, 2590 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 2565 Invalid, 0 Unknown, 0 Unchecked, 4.0s Time] [2023-04-02 06:06:26,769 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7067 states. [2023-04-02 06:06:27,380 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7067 to 3309. [2023-04-02 06:06:27,398 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3309 states, 3305 states have (on average 1.4154311649016642) internal successors, (4678), 3305 states have internal predecessors, (4678), 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 06:06:27,420 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3309 states to 3309 states and 4681 transitions. [2023-04-02 06:06:27,420 INFO L78 Accepts]: Start accepts. Automaton has 3309 states and 4681 transitions. Word has length 62 [2023-04-02 06:06:27,420 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:06:27,420 INFO L495 AbstractCegarLoop]: Abstraction has 3309 states and 4681 transitions. [2023-04-02 06:06:27,420 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 4.538461538461538) internal successors, (59), 12 states have internal predecessors, (59), 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 06:06:27,421 INFO L276 IsEmpty]: Start isEmpty. Operand 3309 states and 4681 transitions. [2023-04-02 06:06:27,422 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2023-04-02 06:06:27,422 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:06:27,422 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] [2023-04-02 06:06:27,422 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-04-02 06:06:27,422 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2023-04-02 06:06:27,423 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:06:27,423 INFO L85 PathProgramCache]: Analyzing trace with hash -901183530, now seen corresponding path program 1 times [2023-04-02 06:06:27,423 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:06:27,423 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [77293221] [2023-04-02 06:06:27,423 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:06:27,423 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:06:27,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:06:28,553 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:06:28,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:06:28,569 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 06:06:28,569 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:06:28,570 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [77293221] [2023-04-02 06:06:28,570 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [77293221] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:06:28,570 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:06:28,570 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-04-02 06:06:28,570 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2055411093] [2023-04-02 06:06:28,570 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:06:28,570 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-04-02 06:06:28,570 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:06:28,571 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-04-02 06:06:28,571 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-04-02 06:06:28,571 INFO L87 Difference]: Start difference. First operand 3309 states and 4681 transitions. Second operand has 6 states, 6 states have (on average 11.166666666666666) internal successors, (67), 5 states have internal predecessors, (67), 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 06:06:32,532 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:06:32,533 INFO L93 Difference]: Finished difference Result 10427 states and 15075 transitions. [2023-04-02 06:06:32,533 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-04-02 06:06:32,533 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.166666666666666) internal successors, (67), 5 states have internal predecessors, (67), 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 70 [2023-04-02 06:06:32,534 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:06:32,544 INFO L225 Difference]: With dead ends: 10427 [2023-04-02 06:06:32,544 INFO L226 Difference]: Without dead ends: 7641 [2023-04-02 06:06:32,550 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2023-04-02 06:06:32,551 INFO L413 NwaCegarLoop]: 500 mSDtfsCounter, 1586 mSDsluCounter, 472 mSDsCounter, 0 mSdLazyCounter, 590 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1586 SdHoareTripleChecker+Valid, 972 SdHoareTripleChecker+Invalid, 601 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 590 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2023-04-02 06:06:32,552 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1586 Valid, 972 Invalid, 601 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 590 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2023-04-02 06:06:32,558 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7641 states. [2023-04-02 06:06:33,693 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7641 to 5785. [2023-04-02 06:06:33,698 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5785 states, 5781 states have (on average 1.4139422245286282) internal successors, (8174), 5781 states have internal predecessors, (8174), 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 06:06:33,715 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5785 states to 5785 states and 8177 transitions. [2023-04-02 06:06:33,715 INFO L78 Accepts]: Start accepts. Automaton has 5785 states and 8177 transitions. Word has length 70 [2023-04-02 06:06:33,715 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:06:33,715 INFO L495 AbstractCegarLoop]: Abstraction has 5785 states and 8177 transitions. [2023-04-02 06:06:33,716 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.166666666666666) internal successors, (67), 5 states have internal predecessors, (67), 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 06:06:33,716 INFO L276 IsEmpty]: Start isEmpty. Operand 5785 states and 8177 transitions. [2023-04-02 06:06:33,737 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2023-04-02 06:06:33,737 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:06:33,737 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] [2023-04-02 06:06:33,737 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-04-02 06:06:33,738 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2023-04-02 06:06:33,738 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:06:33,738 INFO L85 PathProgramCache]: Analyzing trace with hash 1807200049, now seen corresponding path program 1 times [2023-04-02 06:06:33,738 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:06:33,738 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1126897051] [2023-04-02 06:06:33,738 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:06:33,738 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:06:33,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:06:34,898 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:06:34,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:06:34,915 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 06:06:34,915 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:06:34,915 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1126897051] [2023-04-02 06:06:34,917 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1126897051] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:06:34,917 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:06:34,918 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-04-02 06:06:34,918 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2122312174] [2023-04-02 06:06:34,918 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:06:34,918 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-04-02 06:06:34,918 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:06:34,918 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-04-02 06:06:34,918 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-04-02 06:06:34,919 INFO L87 Difference]: Start difference. First operand 5785 states and 8177 transitions. Second operand has 6 states, 6 states have (on average 11.333333333333334) internal successors, (68), 5 states have internal predecessors, (68), 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 06:06:37,340 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:06:37,340 INFO L93 Difference]: Finished difference Result 9091 states and 12896 transitions. [2023-04-02 06:06:37,341 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-04-02 06:06:37,341 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.333333333333334) internal successors, (68), 5 states have internal predecessors, (68), 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 71 [2023-04-02 06:06:37,341 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:06:37,346 INFO L225 Difference]: With dead ends: 9091 [2023-04-02 06:06:37,346 INFO L226 Difference]: Without dead ends: 3807 [2023-04-02 06:06:37,353 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-04-02 06:06:37,354 INFO L413 NwaCegarLoop]: 479 mSDtfsCounter, 1080 mSDsluCounter, 344 mSDsCounter, 0 mSdLazyCounter, 569 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1080 SdHoareTripleChecker+Valid, 823 SdHoareTripleChecker+Invalid, 580 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 569 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2023-04-02 06:06:37,354 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1080 Valid, 823 Invalid, 580 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 569 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2023-04-02 06:06:37,357 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3807 states. [2023-04-02 06:06:38,231 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3807 to 3803. [2023-04-02 06:06:38,234 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3803 states, 3799 states have (on average 1.3885232956041063) internal successors, (5275), 3799 states have internal predecessors, (5275), 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 06:06:38,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3803 states to 3803 states and 5278 transitions. [2023-04-02 06:06:38,239 INFO L78 Accepts]: Start accepts. Automaton has 3803 states and 5278 transitions. Word has length 71 [2023-04-02 06:06:38,239 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:06:38,239 INFO L495 AbstractCegarLoop]: Abstraction has 3803 states and 5278 transitions. [2023-04-02 06:06:38,240 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.333333333333334) internal successors, (68), 5 states have internal predecessors, (68), 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 06:06:38,240 INFO L276 IsEmpty]: Start isEmpty. Operand 3803 states and 5278 transitions. [2023-04-02 06:06:38,267 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2023-04-02 06:06:38,267 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:06:38,267 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] [2023-04-02 06:06:38,267 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-04-02 06:06:38,267 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2023-04-02 06:06:38,268 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:06:38,268 INFO L85 PathProgramCache]: Analyzing trace with hash 929815676, now seen corresponding path program 1 times [2023-04-02 06:06:38,268 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:06:38,268 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [126353487] [2023-04-02 06:06:38,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:06:38,268 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:06:38,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:06:39,220 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:06:39,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:06:39,235 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 06:06:39,235 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:06:39,235 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [126353487] [2023-04-02 06:06:39,235 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [126353487] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:06:39,235 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:06:39,235 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-04-02 06:06:39,235 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2140655247] [2023-04-02 06:06:39,235 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:06:39,236 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-04-02 06:06:39,236 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:06:39,236 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-04-02 06:06:39,236 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-04-02 06:06:39,236 INFO L87 Difference]: Start difference. First operand 3803 states and 5278 transitions. Second operand has 4 states, 4 states have (on average 17.5) internal successors, (70), 3 states have internal predecessors, (70), 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 06:06:43,355 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:06:43,356 INFO L93 Difference]: Finished difference Result 10093 states and 14204 transitions. [2023-04-02 06:06:43,356 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-04-02 06:06:43,357 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 17.5) internal successors, (70), 3 states have internal predecessors, (70), 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 73 [2023-04-02 06:06:43,357 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:06:43,366 INFO L225 Difference]: With dead ends: 10093 [2023-04-02 06:06:43,367 INFO L226 Difference]: Without dead ends: 6791 [2023-04-02 06:06:43,371 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-04-02 06:06:43,372 INFO L413 NwaCegarLoop]: 537 mSDtfsCounter, 256 mSDsluCounter, 275 mSDsCounter, 0 mSdLazyCounter, 565 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 256 SdHoareTripleChecker+Valid, 812 SdHoareTripleChecker+Invalid, 583 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 565 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2023-04-02 06:06:43,372 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [256 Valid, 812 Invalid, 583 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 565 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2023-04-02 06:06:43,376 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6791 states. [2023-04-02 06:06:44,915 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6791 to 6373. [2023-04-02 06:06:44,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6373 states, 6369 states have (on average 1.3915842361438215) internal successors, (8863), 6369 states have internal predecessors, (8863), 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 06:06:44,929 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6373 states to 6373 states and 8866 transitions. [2023-04-02 06:06:44,930 INFO L78 Accepts]: Start accepts. Automaton has 6373 states and 8866 transitions. Word has length 73 [2023-04-02 06:06:44,930 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:06:44,930 INFO L495 AbstractCegarLoop]: Abstraction has 6373 states and 8866 transitions. [2023-04-02 06:06:44,930 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.5) internal successors, (70), 3 states have internal predecessors, (70), 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 06:06:44,930 INFO L276 IsEmpty]: Start isEmpty. Operand 6373 states and 8866 transitions. [2023-04-02 06:06:44,932 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2023-04-02 06:06:44,932 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:06:44,932 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] [2023-04-02 06:06:44,932 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-04-02 06:06:44,932 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2023-04-02 06:06:44,932 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:06:44,932 INFO L85 PathProgramCache]: Analyzing trace with hash 1762516015, now seen corresponding path program 1 times [2023-04-02 06:06:44,933 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:06:44,933 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1495706114] [2023-04-02 06:06:44,933 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:06:44,933 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:06:44,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:06:46,017 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:06:46,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:06:46,033 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 06:06:46,033 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:06:46,033 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1495706114] [2023-04-02 06:06:46,033 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1495706114] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:06:46,033 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:06:46,033 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-04-02 06:06:46,033 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [480210572] [2023-04-02 06:06:46,033 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:06:46,034 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-04-02 06:06:46,034 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:06:46,034 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-04-02 06:06:46,034 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-04-02 06:06:46,034 INFO L87 Difference]: Start difference. First operand 6373 states and 8866 transitions. Second operand has 7 states, 7 states have (on average 10.428571428571429) internal successors, (73), 6 states have internal predecessors, (73), 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 06:06:51,456 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:06:51,456 INFO L93 Difference]: Finished difference Result 13434 states and 18542 transitions. [2023-04-02 06:06:51,457 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-04-02 06:06:51,457 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.428571428571429) internal successors, (73), 6 states have internal predecessors, (73), 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 76 [2023-04-02 06:06:51,457 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:06:51,479 INFO L225 Difference]: With dead ends: 13434 [2023-04-02 06:06:51,479 INFO L226 Difference]: Without dead ends: 13432 [2023-04-02 06:06:51,483 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2023-04-02 06:06:51,483 INFO L413 NwaCegarLoop]: 548 mSDtfsCounter, 595 mSDsluCounter, 1664 mSDsCounter, 0 mSdLazyCounter, 632 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 595 SdHoareTripleChecker+Valid, 2212 SdHoareTripleChecker+Invalid, 653 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 632 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2023-04-02 06:06:51,483 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [595 Valid, 2212 Invalid, 653 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 632 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2023-04-02 06:06:51,492 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13432 states. [2023-04-02 06:06:53,395 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13432 to 6817. [2023-04-02 06:06:53,402 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6817 states, 6813 states have (on average 1.3660648759724057) internal successors, (9307), 6813 states have internal predecessors, (9307), 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 06:06:53,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6817 states to 6817 states and 9310 transitions. [2023-04-02 06:06:53,412 INFO L78 Accepts]: Start accepts. Automaton has 6817 states and 9310 transitions. Word has length 76 [2023-04-02 06:06:53,413 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:06:53,413 INFO L495 AbstractCegarLoop]: Abstraction has 6817 states and 9310 transitions. [2023-04-02 06:06:53,413 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.428571428571429) internal successors, (73), 6 states have internal predecessors, (73), 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 06:06:53,413 INFO L276 IsEmpty]: Start isEmpty. Operand 6817 states and 9310 transitions. [2023-04-02 06:06:53,415 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2023-04-02 06:06:53,415 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:06:53,415 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] [2023-04-02 06:06:53,415 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-04-02 06:06:53,415 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2023-04-02 06:06:53,415 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:06:53,415 INFO L85 PathProgramCache]: Analyzing trace with hash -1081558064, now seen corresponding path program 1 times [2023-04-02 06:06:53,415 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:06:53,415 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1424105685] [2023-04-02 06:06:53,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:06:53,416 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:06:53,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:06:54,301 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:06:54,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:06:54,317 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 06:06:54,317 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:06:54,317 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1424105685] [2023-04-02 06:06:54,317 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1424105685] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:06:54,317 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:06:54,317 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-04-02 06:06:54,317 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [179289354] [2023-04-02 06:06:54,317 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:06:54,318 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-04-02 06:06:54,318 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:06:54,318 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-04-02 06:06:54,318 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-04-02 06:06:54,318 INFO L87 Difference]: Start difference. First operand 6817 states and 9310 transitions. Second operand has 4 states, 4 states have (on average 18.5) internal successors, (74), 3 states have internal predecessors, (74), 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 06:07:00,097 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:07:00,097 INFO L93 Difference]: Finished difference Result 18230 states and 25053 transitions. [2023-04-02 06:07:00,098 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-04-02 06:07:00,098 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 18.5) internal successors, (74), 3 states have internal predecessors, (74), 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 77 [2023-04-02 06:07:00,098 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:07:00,115 INFO L225 Difference]: With dead ends: 18230 [2023-04-02 06:07:00,115 INFO L226 Difference]: Without dead ends: 11914 [2023-04-02 06:07:00,123 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-04-02 06:07:00,124 INFO L413 NwaCegarLoop]: 491 mSDtfsCounter, 292 mSDsluCounter, 251 mSDsCounter, 0 mSdLazyCounter, 537 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 292 SdHoareTripleChecker+Valid, 742 SdHoareTripleChecker+Invalid, 551 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 537 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2023-04-02 06:07:00,124 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [292 Valid, 742 Invalid, 551 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 537 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2023-04-02 06:07:00,133 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11914 states. [2023-04-02 06:07:03,502 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11914 to 11912. [2023-04-02 06:07:03,514 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11912 states, 11908 states have (on average 1.356399059455828) internal successors, (16152), 11908 states have internal predecessors, (16152), 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 06:07:03,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11912 states to 11912 states and 16155 transitions. [2023-04-02 06:07:03,536 INFO L78 Accepts]: Start accepts. Automaton has 11912 states and 16155 transitions. Word has length 77 [2023-04-02 06:07:03,536 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:07:03,536 INFO L495 AbstractCegarLoop]: Abstraction has 11912 states and 16155 transitions. [2023-04-02 06:07:03,536 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.5) internal successors, (74), 3 states have internal predecessors, (74), 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 06:07:03,536 INFO L276 IsEmpty]: Start isEmpty. Operand 11912 states and 16155 transitions. [2023-04-02 06:07:03,538 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2023-04-02 06:07:03,538 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:07:03,538 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] [2023-04-02 06:07:03,538 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-04-02 06:07:03,538 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2023-04-02 06:07:03,539 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:07:03,539 INFO L85 PathProgramCache]: Analyzing trace with hash 488987274, now seen corresponding path program 1 times [2023-04-02 06:07:03,539 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:07:03,539 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [600410159] [2023-04-02 06:07:03,539 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:07:03,539 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:07:03,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:07:04,487 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:07:04,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:07:04,504 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 06:07:04,504 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:07:04,504 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [600410159] [2023-04-02 06:07:04,504 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [600410159] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:07:04,504 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:07:04,505 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-04-02 06:07:04,505 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1667879979] [2023-04-02 06:07:04,505 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:07:04,505 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-04-02 06:07:04,505 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:07:04,506 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-04-02 06:07:04,506 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-04-02 06:07:04,506 INFO L87 Difference]: Start difference. First operand 11912 states and 16155 transitions. Second operand has 6 states, 6 states have (on average 12.5) internal successors, (75), 5 states have internal predecessors, (75), 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 06:07:11,898 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:07:11,899 INFO L93 Difference]: Finished difference Result 20778 states and 28307 transitions. [2023-04-02 06:07:11,899 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-04-02 06:07:11,899 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 12.5) internal successors, (75), 5 states have internal predecessors, (75), 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 78 [2023-04-02 06:07:11,900 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:07:11,928 INFO L225 Difference]: With dead ends: 20778 [2023-04-02 06:07:11,928 INFO L226 Difference]: Without dead ends: 17066 [2023-04-02 06:07:11,938 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2023-04-02 06:07:11,939 INFO L413 NwaCegarLoop]: 561 mSDtfsCounter, 1015 mSDsluCounter, 706 mSDsCounter, 0 mSdLazyCounter, 673 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1015 SdHoareTripleChecker+Valid, 1267 SdHoareTripleChecker+Invalid, 682 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 673 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2023-04-02 06:07:11,939 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1015 Valid, 1267 Invalid, 682 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 673 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2023-04-02 06:07:11,957 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17066 states. [2023-04-02 06:07:16,096 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17066 to 14886. [2023-04-02 06:07:16,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14886 states, 14882 states have (on average 1.3534471173229405) internal successors, (20142), 14882 states have internal predecessors, (20142), 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 06:07:16,138 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14886 states to 14886 states and 20145 transitions. [2023-04-02 06:07:16,138 INFO L78 Accepts]: Start accepts. Automaton has 14886 states and 20145 transitions. Word has length 78 [2023-04-02 06:07:16,139 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:07:16,139 INFO L495 AbstractCegarLoop]: Abstraction has 14886 states and 20145 transitions. [2023-04-02 06:07:16,139 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.5) internal successors, (75), 5 states have internal predecessors, (75), 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 06:07:16,139 INFO L276 IsEmpty]: Start isEmpty. Operand 14886 states and 20145 transitions. [2023-04-02 06:07:16,141 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2023-04-02 06:07:16,141 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:07:16,141 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] [2023-04-02 06:07:16,141 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2023-04-02 06:07:16,142 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2023-04-02 06:07:16,142 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:07:16,142 INFO L85 PathProgramCache]: Analyzing trace with hash -361198502, now seen corresponding path program 1 times [2023-04-02 06:07:16,142 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:07:16,142 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1397905524] [2023-04-02 06:07:16,142 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:07:16,142 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:07:16,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:07:17,064 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:07:17,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:07:17,078 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 06:07:17,078 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:07:17,078 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1397905524] [2023-04-02 06:07:17,078 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1397905524] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:07:17,078 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:07:17,078 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-04-02 06:07:17,078 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [685698607] [2023-04-02 06:07:17,078 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:07:17,079 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-04-02 06:07:17,079 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:07:17,079 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-04-02 06:07:17,079 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-04-02 06:07:17,079 INFO L87 Difference]: Start difference. First operand 14886 states and 20145 transitions. Second operand has 4 states, 4 states have (on average 18.75) internal successors, (75), 3 states have internal predecessors, (75), 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 06:07:22,657 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:07:22,657 INFO L93 Difference]: Finished difference Result 17934 states and 24215 transitions. [2023-04-02 06:07:22,658 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-04-02 06:07:22,658 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 18.75) internal successors, (75), 3 states have internal predecessors, (75), 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 78 [2023-04-02 06:07:22,659 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:07:22,676 INFO L225 Difference]: With dead ends: 17934 [2023-04-02 06:07:22,676 INFO L226 Difference]: Without dead ends: 11844 [2023-04-02 06:07:22,687 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-04-02 06:07:22,688 INFO L413 NwaCegarLoop]: 544 mSDtfsCounter, 186 mSDsluCounter, 347 mSDsCounter, 0 mSdLazyCounter, 568 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 186 SdHoareTripleChecker+Valid, 891 SdHoareTripleChecker+Invalid, 572 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 568 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2023-04-02 06:07:22,688 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [186 Valid, 891 Invalid, 572 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 568 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2023-04-02 06:07:22,697 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11844 states. [2023-04-02 06:07:25,965 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11844 to 11774. [2023-04-02 06:07:25,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11774 states, 11770 states have (on average 1.3303313508920986) internal successors, (15658), 11770 states have internal predecessors, (15658), 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 06:07:25,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11774 states to 11774 states and 15661 transitions. [2023-04-02 06:07:25,996 INFO L78 Accepts]: Start accepts. Automaton has 11774 states and 15661 transitions. Word has length 78 [2023-04-02 06:07:25,996 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:07:25,996 INFO L495 AbstractCegarLoop]: Abstraction has 11774 states and 15661 transitions. [2023-04-02 06:07:25,996 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.75) internal successors, (75), 3 states have internal predecessors, (75), 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 06:07:25,996 INFO L276 IsEmpty]: Start isEmpty. Operand 11774 states and 15661 transitions. [2023-04-02 06:07:25,998 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2023-04-02 06:07:25,998 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:07:25,998 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] [2023-04-02 06:07:25,998 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2023-04-02 06:07:25,999 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2023-04-02 06:07:25,999 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:07:25,999 INFO L85 PathProgramCache]: Analyzing trace with hash 1771129649, now seen corresponding path program 1 times [2023-04-02 06:07:25,999 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:07:25,999 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1118789344] [2023-04-02 06:07:25,999 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:07:25,999 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:07:26,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:07:27,205 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:07:27,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:07:27,218 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 06:07:27,218 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:07:27,218 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1118789344] [2023-04-02 06:07:27,219 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1118789344] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:07:27,219 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:07:27,219 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-04-02 06:07:27,219 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1399910433] [2023-04-02 06:07:27,219 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:07:27,219 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-04-02 06:07:27,219 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:07:27,220 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-04-02 06:07:27,220 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-04-02 06:07:27,220 INFO L87 Difference]: Start difference. First operand 11774 states and 15661 transitions. Second operand has 6 states, 6 states have (on average 12.666666666666666) internal successors, (76), 5 states have internal predecessors, (76), 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 06:07:33,680 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:07:33,681 INFO L93 Difference]: Finished difference Result 16958 states and 22721 transitions. [2023-04-02 06:07:33,682 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-04-02 06:07:33,682 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 12.666666666666666) internal successors, (76), 5 states have internal predecessors, (76), 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 79 [2023-04-02 06:07:33,688 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:07:33,705 INFO L225 Difference]: With dead ends: 16958 [2023-04-02 06:07:33,705 INFO L226 Difference]: Without dead ends: 14348 [2023-04-02 06:07:33,710 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2023-04-02 06:07:33,711 INFO L413 NwaCegarLoop]: 576 mSDtfsCounter, 995 mSDsluCounter, 670 mSDsCounter, 0 mSdLazyCounter, 674 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 995 SdHoareTripleChecker+Valid, 1246 SdHoareTripleChecker+Invalid, 683 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 674 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2023-04-02 06:07:33,711 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [995 Valid, 1246 Invalid, 683 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 674 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2023-04-02 06:07:33,719 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14348 states. [2023-04-02 06:07:37,511 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14348 to 13662. [2023-04-02 06:07:37,521 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13662 states, 13658 states have (on average 1.3300629667594084) internal successors, (18166), 13658 states have internal predecessors, (18166), 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 06:07:37,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13662 states to 13662 states and 18169 transitions. [2023-04-02 06:07:37,541 INFO L78 Accepts]: Start accepts. Automaton has 13662 states and 18169 transitions. Word has length 79 [2023-04-02 06:07:37,541 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:07:37,541 INFO L495 AbstractCegarLoop]: Abstraction has 13662 states and 18169 transitions. [2023-04-02 06:07:37,541 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.666666666666666) internal successors, (76), 5 states have internal predecessors, (76), 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 06:07:37,541 INFO L276 IsEmpty]: Start isEmpty. Operand 13662 states and 18169 transitions. [2023-04-02 06:07:37,543 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2023-04-02 06:07:37,543 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:07:37,543 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] [2023-04-02 06:07:37,543 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2023-04-02 06:07:37,544 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2023-04-02 06:07:37,544 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:07:37,544 INFO L85 PathProgramCache]: Analyzing trace with hash 759833242, now seen corresponding path program 1 times [2023-04-02 06:07:37,544 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:07:37,544 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [781902273] [2023-04-02 06:07:37,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:07:37,545 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:07:37,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:07:38,700 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:07:38,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:07:38,732 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 06:07:38,735 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:07:38,735 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [781902273] [2023-04-02 06:07:38,735 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [781902273] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:07:38,735 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:07:38,735 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-04-02 06:07:38,736 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1682242167] [2023-04-02 06:07:38,736 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:07:38,736 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-04-02 06:07:38,736 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:07:38,737 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-04-02 06:07:38,737 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2023-04-02 06:07:38,737 INFO L87 Difference]: Start difference. First operand 13662 states and 18169 transitions. Second operand has 8 states, 7 states have (on average 11.142857142857142) internal successors, (78), 6 states have internal predecessors, (78), 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 06:07:56,699 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:07:56,699 INFO L93 Difference]: Finished difference Result 53014 states and 70411 transitions. [2023-04-02 06:07:56,700 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-04-02 06:07:56,700 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 11.142857142857142) internal successors, (78), 6 states have internal predecessors, (78), 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 81 [2023-04-02 06:07:56,700 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:07:56,853 INFO L225 Difference]: With dead ends: 53014 [2023-04-02 06:07:56,853 INFO L226 Difference]: Without dead ends: 44820 [2023-04-02 06:07:56,879 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=82, Invalid=190, Unknown=0, NotChecked=0, Total=272 [2023-04-02 06:07:56,879 INFO L413 NwaCegarLoop]: 335 mSDtfsCounter, 2840 mSDsluCounter, 437 mSDsCounter, 0 mSdLazyCounter, 1297 mSolverCounterSat, 65 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2840 SdHoareTripleChecker+Valid, 772 SdHoareTripleChecker+Invalid, 1362 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 65 IncrementalHoareTripleChecker+Valid, 1297 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2023-04-02 06:07:56,879 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2840 Valid, 772 Invalid, 1362 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [65 Valid, 1297 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2023-04-02 06:07:56,913 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44820 states. [2023-04-02 06:08:03,322 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44820 to 20126. [2023-04-02 06:08:03,343 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20126 states, 20122 states have (on average 1.3317761653911142) internal successors, (26798), 20122 states have internal predecessors, (26798), 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 06:08:03,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20126 states to 20126 states and 26801 transitions. [2023-04-02 06:08:03,383 INFO L78 Accepts]: Start accepts. Automaton has 20126 states and 26801 transitions. Word has length 81 [2023-04-02 06:08:03,383 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:08:03,383 INFO L495 AbstractCegarLoop]: Abstraction has 20126 states and 26801 transitions. [2023-04-02 06:08:03,383 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 11.142857142857142) internal successors, (78), 6 states have internal predecessors, (78), 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 06:08:03,383 INFO L276 IsEmpty]: Start isEmpty. Operand 20126 states and 26801 transitions. [2023-04-02 06:08:03,386 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2023-04-02 06:08:03,386 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:08:03,386 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] [2023-04-02 06:08:03,386 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2023-04-02 06:08:03,386 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2023-04-02 06:08:03,387 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:08:03,387 INFO L85 PathProgramCache]: Analyzing trace with hash 1909292305, now seen corresponding path program 1 times [2023-04-02 06:08:03,387 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:08:03,387 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [473722169] [2023-04-02 06:08:03,387 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:08:03,387 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:08:03,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:08:04,471 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:08:04,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:08:04,486 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 06:08:04,487 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:08:04,487 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [473722169] [2023-04-02 06:08:04,487 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [473722169] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:08:04,487 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:08:04,487 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-04-02 06:08:04,487 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [718603227] [2023-04-02 06:08:04,487 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:08:04,488 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-04-02 06:08:04,488 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:08:04,488 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-04-02 06:08:04,488 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-04-02 06:08:04,489 INFO L87 Difference]: Start difference. First operand 20126 states and 26801 transitions. Second operand has 6 states, 6 states have (on average 13.0) internal successors, (78), 5 states have internal predecessors, (78), 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 06:08:15,642 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:08:15,642 INFO L93 Difference]: Finished difference Result 28926 states and 38599 transitions. [2023-04-02 06:08:15,643 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-04-02 06:08:15,643 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 13.0) internal successors, (78), 5 states have internal predecessors, (78), 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 81 [2023-04-02 06:08:15,643 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:08:15,691 INFO L225 Difference]: With dead ends: 28926 [2023-04-02 06:08:15,692 INFO L226 Difference]: Without dead ends: 24824 [2023-04-02 06:08:15,703 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2023-04-02 06:08:15,703 INFO L413 NwaCegarLoop]: 572 mSDtfsCounter, 984 mSDsluCounter, 660 mSDsCounter, 0 mSdLazyCounter, 670 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 984 SdHoareTripleChecker+Valid, 1232 SdHoareTripleChecker+Invalid, 678 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 670 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2023-04-02 06:08:15,703 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [984 Valid, 1232 Invalid, 678 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 670 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2023-04-02 06:08:15,724 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24824 states. [2023-04-02 06:08:23,539 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24824 to 23518. [2023-04-02 06:08:23,564 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23518 states, 23514 states have (on average 1.3295058263162371) internal successors, (31262), 23514 states have internal predecessors, (31262), 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 06:08:23,614 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23518 states to 23518 states and 31265 transitions. [2023-04-02 06:08:23,614 INFO L78 Accepts]: Start accepts. Automaton has 23518 states and 31265 transitions. Word has length 81 [2023-04-02 06:08:23,614 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:08:23,615 INFO L495 AbstractCegarLoop]: Abstraction has 23518 states and 31265 transitions. [2023-04-02 06:08:23,615 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.0) internal successors, (78), 5 states have internal predecessors, (78), 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 06:08:23,615 INFO L276 IsEmpty]: Start isEmpty. Operand 23518 states and 31265 transitions. [2023-04-02 06:08:23,618 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2023-04-02 06:08:23,618 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:08:23,618 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] [2023-04-02 06:08:23,618 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2023-04-02 06:08:23,618 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2023-04-02 06:08:23,619 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:08:23,619 INFO L85 PathProgramCache]: Analyzing trace with hash 813244048, now seen corresponding path program 1 times [2023-04-02 06:08:23,619 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:08:23,619 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1947216976] [2023-04-02 06:08:23,619 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:08:23,619 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:08:23,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:08:24,631 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:08:24,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:08:24,648 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 06:08:24,648 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:08:24,648 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1947216976] [2023-04-02 06:08:24,648 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1947216976] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:08:24,648 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:08:24,648 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-04-02 06:08:24,649 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [698246375] [2023-04-02 06:08:24,649 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:08:24,649 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-04-02 06:08:24,649 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:08:24,649 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-04-02 06:08:24,649 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-04-02 06:08:24,650 INFO L87 Difference]: Start difference. First operand 23518 states and 31265 transitions. Second operand has 6 states, 6 states have (on average 13.833333333333334) internal successors, (83), 5 states have internal predecessors, (83), 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 06:08:35,123 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:08:35,123 INFO L93 Difference]: Finished difference Result 31680 states and 42180 transitions. [2023-04-02 06:08:35,124 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-04-02 06:08:35,124 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 13.833333333333334) internal successors, (83), 5 states have internal predecessors, (83), 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 86 [2023-04-02 06:08:35,124 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:08:35,169 INFO L225 Difference]: With dead ends: 31680 [2023-04-02 06:08:35,169 INFO L226 Difference]: Without dead ends: 24678 [2023-04-02 06:08:35,180 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2023-04-02 06:08:35,181 INFO L413 NwaCegarLoop]: 552 mSDtfsCounter, 1012 mSDsluCounter, 707 mSDsCounter, 0 mSdLazyCounter, 666 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1012 SdHoareTripleChecker+Valid, 1259 SdHoareTripleChecker+Invalid, 675 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 666 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2023-04-02 06:08:35,181 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1012 Valid, 1259 Invalid, 675 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 666 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2023-04-02 06:08:35,200 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24678 states. [2023-04-02 06:08:42,441 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24678 to 23374. [2023-04-02 06:08:42,465 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23374 states, 23370 states have (on average 1.3274283269148481) internal successors, (31022), 23370 states have internal predecessors, (31022), 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 06:08:42,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23374 states to 23374 states and 31025 transitions. [2023-04-02 06:08:42,508 INFO L78 Accepts]: Start accepts. Automaton has 23374 states and 31025 transitions. Word has length 86 [2023-04-02 06:08:42,508 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:08:42,508 INFO L495 AbstractCegarLoop]: Abstraction has 23374 states and 31025 transitions. [2023-04-02 06:08:42,508 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.833333333333334) internal successors, (83), 5 states have internal predecessors, (83), 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 06:08:42,508 INFO L276 IsEmpty]: Start isEmpty. Operand 23374 states and 31025 transitions. [2023-04-02 06:08:42,527 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2023-04-02 06:08:42,527 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:08:42,527 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] [2023-04-02 06:08:42,527 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2023-04-02 06:08:42,527 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2023-04-02 06:08:42,528 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:08:42,528 INFO L85 PathProgramCache]: Analyzing trace with hash -1523521973, now seen corresponding path program 1 times [2023-04-02 06:08:42,528 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:08:42,528 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [92016208] [2023-04-02 06:08:42,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:08:42,528 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:08:42,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:08:43,564 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:08:43,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:08:43,602 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 06:08:43,602 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:08:43,602 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [92016208] [2023-04-02 06:08:43,602 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [92016208] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:08:43,602 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:08:43,602 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-04-02 06:08:43,602 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1019393811] [2023-04-02 06:08:43,602 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:08:43,603 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-04-02 06:08:43,603 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:08:43,604 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-04-02 06:08:43,604 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2023-04-02 06:08:43,604 INFO L87 Difference]: Start difference. First operand 23374 states and 31025 transitions. Second operand has 8 states, 7 states have (on average 12.0) internal successors, (84), 6 states have internal predecessors, (84), 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 06:08:55,695 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:08:55,695 INFO L93 Difference]: Finished difference Result 27052 states and 35793 transitions. [2023-04-02 06:08:55,696 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-04-02 06:08:55,696 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 12.0) internal successors, (84), 6 states have internal predecessors, (84), 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 87 [2023-04-02 06:08:55,696 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:08:55,740 INFO L225 Difference]: With dead ends: 27052 [2023-04-02 06:08:55,740 INFO L226 Difference]: Without dead ends: 26414 [2023-04-02 06:08:55,749 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=82, Invalid=190, Unknown=0, NotChecked=0, Total=272 [2023-04-02 06:08:55,750 INFO L413 NwaCegarLoop]: 316 mSDtfsCounter, 2183 mSDsluCounter, 392 mSDsCounter, 0 mSdLazyCounter, 1178 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2183 SdHoareTripleChecker+Valid, 708 SdHoareTripleChecker+Invalid, 1232 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 1178 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2023-04-02 06:08:55,750 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2183 Valid, 708 Invalid, 1232 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [54 Valid, 1178 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2023-04-02 06:08:55,767 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26414 states. [2023-04-02 06:09:03,289 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26414 to 23372. [2023-04-02 06:09:03,310 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23372 states, 23368 states have (on average 1.327370763437179) internal successors, (31018), 23368 states have internal predecessors, (31018), 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 06:09:03,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23372 states to 23372 states and 31021 transitions. [2023-04-02 06:09:03,355 INFO L78 Accepts]: Start accepts. Automaton has 23372 states and 31021 transitions. Word has length 87 [2023-04-02 06:09:03,355 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:09:03,356 INFO L495 AbstractCegarLoop]: Abstraction has 23372 states and 31021 transitions. [2023-04-02 06:09:03,356 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 12.0) internal successors, (84), 6 states have internal predecessors, (84), 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 06:09:03,356 INFO L276 IsEmpty]: Start isEmpty. Operand 23372 states and 31021 transitions. [2023-04-02 06:09:03,362 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2023-04-02 06:09:03,362 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:09:03,363 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-04-02 06:09:03,363 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2023-04-02 06:09:03,363 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2023-04-02 06:09:03,363 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:09:03,363 INFO L85 PathProgramCache]: Analyzing trace with hash -700849981, now seen corresponding path program 1 times [2023-04-02 06:09:03,363 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:09:03,363 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1267269752] [2023-04-02 06:09:03,363 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:09:03,364 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:09:03,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:09:04,434 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:09:04,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:09:04,449 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 3 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 06:09:04,449 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:09:04,449 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1267269752] [2023-04-02 06:09:04,449 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1267269752] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-02 06:09:04,450 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1713093061] [2023-04-02 06:09:04,450 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:09:04,450 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 06:09:04,450 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-02 06:09:04,455 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-02 06:09:04,469 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-04-02 06:09:04,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:09:04,858 INFO L262 TraceCheckSpWp]: Trace formula consists of 2034 conjuncts, 17 conjunts are in the unsatisfiable core [2023-04-02 06:09:04,867 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-02 06:09:05,334 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 06:09:05,334 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-02 06:09:05,890 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 06:09:05,890 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1713093061] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-02 06:09:05,890 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-04-02 06:09:05,890 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 10, 10] total 22 [2023-04-02 06:09:05,891 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2008255757] [2023-04-02 06:09:05,891 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-04-02 06:09:05,891 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2023-04-02 06:09:05,891 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:09:05,892 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2023-04-02 06:09:05,892 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=390, Unknown=0, NotChecked=0, Total=462 [2023-04-02 06:09:05,892 INFO L87 Difference]: Start difference. First operand 23372 states and 31021 transitions. Second operand has 22 states, 22 states have (on average 12.181818181818182) internal successors, (268), 21 states have internal predecessors, (268), 3 states have call successors, (5), 4 states have call predecessors, (5), 3 states have return successors, (3), 3 states have call predecessors, (3), 1 states have call successors, (3)