/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+lhb-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-f954360 [2023-04-02 06:04:36,943 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-04-02 06:04:36,945 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-04-02 06:04:36,978 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-04-02 06:04:36,978 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-04-02 06:04:36,981 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-04-02 06:04:36,984 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-04-02 06:04:36,987 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-04-02 06:04:36,988 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-04-02 06:04:36,991 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-04-02 06:04:36,992 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-04-02 06:04:36,994 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-04-02 06:04:36,994 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-04-02 06:04:36,996 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-04-02 06:04:36,996 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-04-02 06:04:36,997 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-04-02 06:04:36,998 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-04-02 06:04:36,998 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-04-02 06:04:37,000 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-04-02 06:04:37,004 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-04-02 06:04:37,004 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-04-02 06:04:37,005 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-04-02 06:04:37,006 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-04-02 06:04:37,007 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-04-02 06:04:37,024 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2023-04-02 06:04:37,027 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-04-02 06:04:37,028 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-04-02 06:04:37,029 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-04-02 06:04:37,030 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-04-02 06:04:37,030 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-04-02 06:04:37,030 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-04-02 06:04:37,031 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-04-02 06:04:37,031 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-04-02 06:04:37,031 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-04-02 06:04:37,031 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-04-02 06:04:37,032 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-04-02 06:04:37,033 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 06:04:37,056 INFO L113 SettingsManager]: Loading preferences was successful [2023-04-02 06:04:37,056 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-04-02 06:04:37,056 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-04-02 06:04:37,056 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-04-02 06:04:37,057 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-04-02 06:04:37,057 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-04-02 06:04:37,058 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-04-02 06:04:37,058 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-04-02 06:04:37,058 INFO L138 SettingsManager]: * Use SBE=true [2023-04-02 06:04:37,058 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-04-02 06:04:37,059 INFO L138 SettingsManager]: * sizeof long=4 [2023-04-02 06:04:37,059 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-04-02 06:04:37,059 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-04-02 06:04:37,059 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-04-02 06:04:37,059 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-04-02 06:04:37,059 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-04-02 06:04:37,059 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-04-02 06:04:37,059 INFO L138 SettingsManager]: * sizeof long double=12 [2023-04-02 06:04:37,059 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-04-02 06:04:37,059 INFO L138 SettingsManager]: * Use constant arrays=true [2023-04-02 06:04:37,060 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-04-02 06:04:37,060 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-04-02 06:04:37,060 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-04-02 06:04:37,060 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-04-02 06:04:37,060 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-02 06:04:37,060 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-04-02 06:04:37,060 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-04-02 06:04:37,061 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-04-02 06:04:37,061 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-04-02 06:04:37,061 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-04-02 06:04:37,061 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-04-02 06:04:37,061 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-04-02 06:04:37,061 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-04-02 06:04:37,061 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-04-02 06:04:37,061 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-04-02 06:04:37,061 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-04-02 06:04:37,272 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-04-02 06:04:37,301 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-04-02 06:04:37,304 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-04-02 06:04:37,305 INFO L271 PluginConnector]: Initializing CDTParser... [2023-04-02 06:04:37,305 INFO L275 PluginConnector]: CDTParser initialized [2023-04-02 06:04:37,306 INFO L432 ainManager$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+lhb-reducer.c [2023-04-02 06:04:38,455 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-04-02 06:04:38,749 INFO L351 CDTParser]: Found 1 translation units. [2023-04-02 06:04:38,755 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+lhb-reducer.c [2023-04-02 06:04:38,768 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c0b1501f9/578e27867cec46a7865df2b060c144bf/FLAG2d2a4882e [2023-04-02 06:04:38,780 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c0b1501f9/578e27867cec46a7865df2b060c144bf [2023-04-02 06:04:38,782 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-04-02 06:04:38,783 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2023-04-02 06:04:38,785 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-04-02 06:04:38,785 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-04-02 06:04:38,787 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-04-02 06:04:38,788 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.04 06:04:38" (1/1) ... [2023-04-02 06:04:38,789 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7d6ea72d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 06:04:38, skipping insertion in model container [2023-04-02 06:04:38,789 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.04 06:04:38" (1/1) ... [2023-04-02 06:04:38,794 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-04-02 06:04:38,856 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-04-02 06:04:39,085 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+lhb-reducer.c[8635,8648] [2023-04-02 06:04:39,133 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+lhb-reducer.c[15820,15833] [2023-04-02 06:04:39,152 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+lhb-reducer.c[18017,18030] [2023-04-02 06:04:39,157 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+lhb-reducer.c[19041,19054] [2023-04-02 06:04:39,293 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-02 06:04:39,307 INFO L203 MainTranslator]: Completed pre-run [2023-04-02 06:04:39,356 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+lhb-reducer.c[8635,8648] [2023-04-02 06:04:39,387 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+lhb-reducer.c[15820,15833] [2023-04-02 06:04:39,391 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+lhb-reducer.c[18017,18030] [2023-04-02 06:04:39,394 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+lhb-reducer.c[19041,19054] [2023-04-02 06:04:39,498 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-02 06:04:39,519 INFO L208 MainTranslator]: Completed translation [2023-04-02 06:04:39,519 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 06:04:39 WrapperNode [2023-04-02 06:04:39,519 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-04-02 06:04:39,520 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-04-02 06:04:39,520 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-04-02 06:04:39,520 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-04-02 06:04:39,529 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 06:04:39" (1/1) ... [2023-04-02 06:04:39,529 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 06:04:39" (1/1) ... [2023-04-02 06:04:39,555 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 06:04:39" (1/1) ... [2023-04-02 06:04:39,555 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 06:04:39" (1/1) ... [2023-04-02 06:04:39,598 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 06:04:39" (1/1) ... [2023-04-02 06:04:39,607 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 06:04:39" (1/1) ... [2023-04-02 06:04:39,626 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 06:04:39" (1/1) ... [2023-04-02 06:04:39,633 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 06:04:39" (1/1) ... [2023-04-02 06:04:39,644 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-04-02 06:04:39,645 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-04-02 06:04:39,645 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-04-02 06:04:39,645 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-04-02 06:04:39,646 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 06:04:39" (1/1) ... [2023-04-02 06:04:39,652 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-02 06:04:39,660 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-02 06:04:39,674 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 06:04:39,692 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 06:04:39,705 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2023-04-02 06:04:39,705 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-04-02 06:04:39,705 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2023-04-02 06:04:39,705 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-04-02 06:04:39,705 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2023-04-02 06:04:39,705 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2023-04-02 06:04:39,705 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2023-04-02 06:04:39,706 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2023-04-02 06:04:39,706 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-04-02 06:04:39,706 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2023-04-02 06:04:39,706 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2023-04-02 06:04:39,706 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2023-04-02 06:04:39,706 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-04-02 06:04:39,706 INFO L130 BoogieDeclarations]: Found specification of procedure read [2023-04-02 06:04:39,706 INFO L130 BoogieDeclarations]: Found specification of procedure write [2023-04-02 06:04:39,706 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2023-04-02 06:04:39,706 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2023-04-02 06:04:39,706 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2023-04-02 06:04:39,706 INFO L130 BoogieDeclarations]: Found specification of procedure init [2023-04-02 06:04:39,706 INFO L130 BoogieDeclarations]: Found specification of procedure check [2023-04-02 06:04:39,706 INFO L130 BoogieDeclarations]: Found specification of procedure main [2023-04-02 06:04:39,707 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2023-04-02 06:04:39,707 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-04-02 06:04:39,707 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-04-02 06:04:39,707 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-04-02 06:04:39,707 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-04-02 06:04:39,707 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-04-02 06:04:39,898 INFO L236 CfgBuilder]: Building ICFG [2023-04-02 06:04:39,901 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-04-02 06:04:41,123 INFO L277 CfgBuilder]: Performing block encoding [2023-04-02 06:04:41,132 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-04-02 06:04:41,132 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-04-02 06:04:41,134 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.04 06:04:41 BoogieIcfgContainer [2023-04-02 06:04:41,135 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-04-02 06:04:41,136 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-04-02 06:04:41,136 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-04-02 06:04:41,139 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-04-02 06:04:41,139 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.04 06:04:38" (1/3) ... [2023-04-02 06:04:41,139 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@75f01118 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.04 06:04:41, skipping insertion in model container [2023-04-02 06:04:41,139 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 06:04:39" (2/3) ... [2023-04-02 06:04:41,140 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@75f01118 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.04 06:04:41, skipping insertion in model container [2023-04-02 06:04:41,140 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.04 06:04:41" (3/3) ... [2023-04-02 06:04:41,141 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_lcr-var-start-time.3.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c [2023-04-02 06:04:41,154 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-04-02 06:04:41,154 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2023-04-02 06:04:41,207 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-04-02 06:04:41,212 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;@260fccb5, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-04-02 06:04:41,212 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2023-04-02 06:04:41,220 INFO L276 IsEmpty]: Start isEmpty. Operand has 462 states, 453 states have (on average 1.8476821192052981) internal successors, (837), 457 states have internal predecessors, (837), 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 06:04:41,232 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2023-04-02 06:04:41,232 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:04:41,233 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] [2023-04-02 06:04:41,234 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting mainErr3ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 06:04:41,239 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:04:41,239 INFO L85 PathProgramCache]: Analyzing trace with hash 997070496, now seen corresponding path program 1 times [2023-04-02 06:04:41,246 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:04:41,246 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1278854053] [2023-04-02 06:04:41,246 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:04:41,247 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:04:41,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:04:42,004 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:04:42,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:04:42,040 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 06:04:42,040 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:04:42,040 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1278854053] [2023-04-02 06:04:42,041 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1278854053] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:04:42,041 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:04:42,041 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-04-02 06:04:42,042 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1126868528] [2023-04-02 06:04:42,043 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:04:42,048 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-04-02 06:04:42,049 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:04:42,079 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-04-02 06:04:42,080 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-04-02 06:04:42,082 INFO L87 Difference]: Start difference. First operand has 462 states, 453 states have (on average 1.8476821192052981) internal successors, (837), 457 states have internal predecessors, (837), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand has 4 states, 4 states have (on average 13.0) internal successors, (52), 3 states have internal predecessors, (52), 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 06:04:44,371 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:04:44,371 INFO L93 Difference]: Finished difference Result 732 states and 1278 transitions. [2023-04-02 06:04:44,373 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-04-02 06:04:44,374 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.0) internal successors, (52), 3 states have internal predecessors, (52), 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 55 [2023-04-02 06:04:44,374 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:04:44,389 INFO L225 Difference]: With dead ends: 732 [2023-04-02 06:04:44,389 INFO L226 Difference]: Without dead ends: 575 [2023-04-02 06:04:44,392 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-04-02 06:04:44,397 INFO L413 NwaCegarLoop]: 869 mSDtfsCounter, 440 mSDsluCounter, 557 mSDsCounter, 0 mSdLazyCounter, 884 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 440 SdHoareTripleChecker+Valid, 1426 SdHoareTripleChecker+Invalid, 896 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 884 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2023-04-02 06:04:44,398 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [440 Valid, 1426 Invalid, 896 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 884 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2023-04-02 06:04:44,412 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 575 states. [2023-04-02 06:04:44,476 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 575 to 569. [2023-04-02 06:04:44,478 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 569 states, 562 states have (on average 1.3434163701067616) internal successors, (755), 565 states have internal predecessors, (755), 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 06:04:44,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 569 states to 569 states and 758 transitions. [2023-04-02 06:04:44,482 INFO L78 Accepts]: Start accepts. Automaton has 569 states and 758 transitions. Word has length 55 [2023-04-02 06:04:44,482 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:04:44,482 INFO L495 AbstractCegarLoop]: Abstraction has 569 states and 758 transitions. [2023-04-02 06:04:44,483 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.0) internal successors, (52), 3 states have internal predecessors, (52), 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 06:04:44,483 INFO L276 IsEmpty]: Start isEmpty. Operand 569 states and 758 transitions. [2023-04-02 06:04:44,490 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2023-04-02 06:04:44,490 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:04:44,491 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] [2023-04-02 06:04:44,491 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-04-02 06:04:44,491 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting mainErr2ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 06:04:44,492 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:04:44,492 INFO L85 PathProgramCache]: Analyzing trace with hash 2051131080, now seen corresponding path program 1 times [2023-04-02 06:04:44,492 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:04:44,493 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1087348422] [2023-04-02 06:04:44,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:04:44,493 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:04:44,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:04:44,959 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:04:44,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:04:44,994 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 06:04:44,994 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:04:44,994 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1087348422] [2023-04-02 06:04:44,994 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1087348422] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:04:44,994 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:04:44,994 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-04-02 06:04:44,995 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1355993252] [2023-04-02 06:04:44,995 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:04:44,995 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-04-02 06:04:44,996 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:04:44,996 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-04-02 06:04:44,996 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-04-02 06:04:44,996 INFO L87 Difference]: Start difference. First operand 569 states and 758 transitions. Second operand has 6 states, 5 states have (on average 10.4) internal successors, (52), 4 states have internal predecessors, (52), 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 06:04:46,669 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:04:46,669 INFO L93 Difference]: Finished difference Result 1068 states and 1467 transitions. [2023-04-02 06:04:46,670 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-04-02 06:04:46,671 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 10.4) internal successors, (52), 4 states have internal predecessors, (52), 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 55 [2023-04-02 06:04:46,671 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:04:46,673 INFO L225 Difference]: With dead ends: 1068 [2023-04-02 06:04:46,673 INFO L226 Difference]: Without dead ends: 713 [2023-04-02 06:04:46,675 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2023-04-02 06:04:46,676 INFO L413 NwaCegarLoop]: 310 mSDtfsCounter, 1811 mSDsluCounter, 113 mSDsCounter, 0 mSdLazyCounter, 823 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1811 SdHoareTripleChecker+Valid, 423 SdHoareTripleChecker+Invalid, 862 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 823 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-04-02 06:04:46,676 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1811 Valid, 423 Invalid, 862 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 823 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-04-02 06:04:46,677 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 713 states. [2023-04-02 06:04:46,713 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 713 to 706. [2023-04-02 06:04:46,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 706 states, 699 states have (on average 1.3605150214592274) internal successors, (951), 702 states have internal predecessors, (951), 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 06:04:46,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 706 states to 706 states and 954 transitions. [2023-04-02 06:04:46,717 INFO L78 Accepts]: Start accepts. Automaton has 706 states and 954 transitions. Word has length 55 [2023-04-02 06:04:46,717 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:04:46,718 INFO L495 AbstractCegarLoop]: Abstraction has 706 states and 954 transitions. [2023-04-02 06:04:46,718 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 10.4) internal successors, (52), 4 states have internal predecessors, (52), 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 06:04:46,718 INFO L276 IsEmpty]: Start isEmpty. Operand 706 states and 954 transitions. [2023-04-02 06:04:46,721 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2023-04-02 06:04:46,721 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:04:46,721 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] [2023-04-02 06:04:46,721 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-04-02 06:04:46,721 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting mainErr2ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 06:04:46,722 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:04:46,722 INFO L85 PathProgramCache]: Analyzing trace with hash -2137795285, now seen corresponding path program 1 times [2023-04-02 06:04:46,722 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:04:46,722 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1535043735] [2023-04-02 06:04:46,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:04:46,722 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:04:46,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:04:47,149 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:04:47,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:04:47,163 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 06:04:47,163 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:04:47,163 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1535043735] [2023-04-02 06:04:47,163 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1535043735] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:04:47,163 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:04:47,163 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-04-02 06:04:47,163 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1180380952] [2023-04-02 06:04:47,163 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:04:47,164 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-04-02 06:04:47,164 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:04:47,164 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-04-02 06:04:47,164 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-04-02 06:04:47,165 INFO L87 Difference]: Start difference. First operand 706 states and 954 transitions. Second operand has 4 states, 4 states have (on average 13.0) internal successors, (52), 3 states have internal predecessors, (52), 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 06:04:48,702 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:04:48,702 INFO L93 Difference]: Finished difference Result 1236 states and 1733 transitions. [2023-04-02 06:04:48,703 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-04-02 06:04:48,703 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.0) internal successors, (52), 3 states have internal predecessors, (52), 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 55 [2023-04-02 06:04:48,703 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:04:48,706 INFO L225 Difference]: With dead ends: 1236 [2023-04-02 06:04:48,706 INFO L226 Difference]: Without dead ends: 910 [2023-04-02 06:04:48,708 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-04-02 06:04:48,709 INFO L413 NwaCegarLoop]: 559 mSDtfsCounter, 305 mSDsluCounter, 352 mSDsCounter, 0 mSdLazyCounter, 592 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 305 SdHoareTripleChecker+Valid, 911 SdHoareTripleChecker+Invalid, 616 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 592 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-04-02 06:04:48,711 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [305 Valid, 911 Invalid, 616 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 592 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-04-02 06:04:48,712 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 910 states. [2023-04-02 06:04:48,744 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 910 to 901. [2023-04-02 06:04:48,745 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 901 states, 894 states have (on average 1.3724832214765101) internal successors, (1227), 897 states have internal predecessors, (1227), 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 06:04:48,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 901 states to 901 states and 1230 transitions. [2023-04-02 06:04:48,747 INFO L78 Accepts]: Start accepts. Automaton has 901 states and 1230 transitions. Word has length 55 [2023-04-02 06:04:48,749 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:04:48,749 INFO L495 AbstractCegarLoop]: Abstraction has 901 states and 1230 transitions. [2023-04-02 06:04:48,749 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.0) internal successors, (52), 3 states have internal predecessors, (52), 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 06:04:48,749 INFO L276 IsEmpty]: Start isEmpty. Operand 901 states and 1230 transitions. [2023-04-02 06:04:48,750 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2023-04-02 06:04:48,750 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:04:48,751 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] [2023-04-02 06:04:48,751 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-04-02 06:04:48,752 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting mainErr3ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 06:04:48,752 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:04:48,752 INFO L85 PathProgramCache]: Analyzing trace with hash -1619398692, now seen corresponding path program 1 times [2023-04-02 06:04:48,752 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:04:48,752 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1004806750] [2023-04-02 06:04:48,752 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:04:48,752 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:04:48,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:04:49,168 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:04:49,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:04:49,194 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 06:04:49,194 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:04:49,194 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1004806750] [2023-04-02 06:04:49,194 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1004806750] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:04:49,194 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:04:49,194 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-04-02 06:04:49,195 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [981190272] [2023-04-02 06:04:49,195 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:04:49,195 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-04-02 06:04:49,195 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:04:49,195 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-04-02 06:04:49,196 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-04-02 06:04:49,196 INFO L87 Difference]: Start difference. First operand 901 states and 1230 transitions. Second operand has 6 states, 5 states have (on average 10.4) internal successors, (52), 4 states have internal predecessors, (52), 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 06:04:50,560 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:04:50,560 INFO L93 Difference]: Finished difference Result 1859 states and 2600 transitions. [2023-04-02 06:04:50,560 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-04-02 06:04:50,560 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 10.4) internal successors, (52), 4 states have internal predecessors, (52), 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 55 [2023-04-02 06:04:50,561 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:04:50,564 INFO L225 Difference]: With dead ends: 1859 [2023-04-02 06:04:50,564 INFO L226 Difference]: Without dead ends: 1115 [2023-04-02 06:04:50,566 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2023-04-02 06:04:50,572 INFO L413 NwaCegarLoop]: 285 mSDtfsCounter, 1650 mSDsluCounter, 113 mSDsCounter, 0 mSdLazyCounter, 714 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1650 SdHoareTripleChecker+Valid, 398 SdHoareTripleChecker+Invalid, 732 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 714 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-04-02 06:04:50,573 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1650 Valid, 398 Invalid, 732 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 714 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-04-02 06:04:50,575 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1115 states. [2023-04-02 06:04:50,627 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1115 to 1106. [2023-04-02 06:04:50,629 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1106 states, 1099 states have (on average 1.394904458598726) internal successors, (1533), 1102 states have internal predecessors, (1533), 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 06:04:50,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1106 states to 1106 states and 1536 transitions. [2023-04-02 06:04:50,633 INFO L78 Accepts]: Start accepts. Automaton has 1106 states and 1536 transitions. Word has length 55 [2023-04-02 06:04:50,633 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:04:50,633 INFO L495 AbstractCegarLoop]: Abstraction has 1106 states and 1536 transitions. [2023-04-02 06:04:50,633 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 10.4) internal successors, (52), 4 states have internal predecessors, (52), 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 06:04:50,633 INFO L276 IsEmpty]: Start isEmpty. Operand 1106 states and 1536 transitions. [2023-04-02 06:04:50,635 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2023-04-02 06:04:50,635 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:04:50,636 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 06:04:50,636 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-04-02 06:04:50,636 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting mainErr2ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 06:04:50,636 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:04:50,636 INFO L85 PathProgramCache]: Analyzing trace with hash 26980257, now seen corresponding path program 1 times [2023-04-02 06:04:50,636 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:04:50,637 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1407237562] [2023-04-02 06:04:50,637 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:04:50,637 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:04:50,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:04:51,088 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:04:51,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:04:51,126 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 06:04:51,126 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:04:51,126 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1407237562] [2023-04-02 06:04:51,127 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1407237562] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:04:51,127 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:04:51,129 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-04-02 06:04:51,132 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [454671312] [2023-04-02 06:04:51,132 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:04:51,133 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-04-02 06:04:51,133 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:04:51,133 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-04-02 06:04:51,133 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-04-02 06:04:51,134 INFO L87 Difference]: Start difference. First operand 1106 states and 1536 transitions. 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 06:04:52,494 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:04:52,494 INFO L93 Difference]: Finished difference Result 2818 states and 4016 transitions. [2023-04-02 06:04:52,494 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-04-02 06:04:52,495 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 06:04:52,495 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:04:52,501 INFO L225 Difference]: With dead ends: 2818 [2023-04-02 06:04:52,501 INFO L226 Difference]: Without dead ends: 1804 [2023-04-02 06:04:52,504 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2023-04-02 06:04:52,505 INFO L413 NwaCegarLoop]: 241 mSDtfsCounter, 1485 mSDsluCounter, 108 mSDsCounter, 0 mSdLazyCounter, 636 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1485 SdHoareTripleChecker+Valid, 349 SdHoareTripleChecker+Invalid, 655 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 636 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-04-02 06:04:52,505 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1485 Valid, 349 Invalid, 655 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 636 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-04-02 06:04:52,507 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1804 states. [2023-04-02 06:04:52,607 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1804 to 1798. [2023-04-02 06:04:52,609 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1798 states, 1791 states have (on average 1.417643774427694) internal successors, (2539), 1794 states have internal predecessors, (2539), 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 06:04:52,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1798 states to 1798 states and 2542 transitions. [2023-04-02 06:04:52,613 INFO L78 Accepts]: Start accepts. Automaton has 1798 states and 2542 transitions. Word has length 56 [2023-04-02 06:04:52,615 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:04:52,615 INFO L495 AbstractCegarLoop]: Abstraction has 1798 states and 2542 transitions. [2023-04-02 06:04:52,615 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 06:04:52,615 INFO L276 IsEmpty]: Start isEmpty. Operand 1798 states and 2542 transitions. [2023-04-02 06:04:52,616 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2023-04-02 06:04:52,616 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:04:52,616 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 06:04:52,616 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-04-02 06:04:52,617 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting mainErr2ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 06:04:52,617 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:04:52,617 INFO L85 PathProgramCache]: Analyzing trace with hash -1061093985, now seen corresponding path program 1 times [2023-04-02 06:04:52,617 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:04:52,617 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1176581398] [2023-04-02 06:04:52,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:04:52,617 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:04:52,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:04:53,013 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:04:53,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:04:53,024 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 06:04:53,024 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:04:53,024 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1176581398] [2023-04-02 06:04:53,024 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1176581398] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:04:53,024 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:04:53,024 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-04-02 06:04:53,024 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1225497308] [2023-04-02 06:04:53,024 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:04:53,025 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-04-02 06:04:53,025 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:04:53,025 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-04-02 06:04:53,025 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-04-02 06:04:53,025 INFO L87 Difference]: Start difference. First operand 1798 states and 2542 transitions. Second operand has 4 states, 4 states have (on average 13.5) internal successors, (54), 3 states have internal predecessors, (54), 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 06:04:54,426 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:04:54,426 INFO L93 Difference]: Finished difference Result 3735 states and 5280 transitions. [2023-04-02 06:04:54,427 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-04-02 06:04:54,427 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.5) internal successors, (54), 3 states have internal predecessors, (54), 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 57 [2023-04-02 06:04:54,427 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:04:54,434 INFO L225 Difference]: With dead ends: 3735 [2023-04-02 06:04:54,434 INFO L226 Difference]: Without dead ends: 2329 [2023-04-02 06:04:54,437 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-04-02 06:04:54,437 INFO L413 NwaCegarLoop]: 472 mSDtfsCounter, 282 mSDsluCounter, 293 mSDsCounter, 0 mSdLazyCounter, 491 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 282 SdHoareTripleChecker+Valid, 765 SdHoareTripleChecker+Invalid, 502 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 491 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-04-02 06:04:54,437 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [282 Valid, 765 Invalid, 502 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 491 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-04-02 06:04:54,439 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2329 states. [2023-04-02 06:04:54,593 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2329 to 2305. [2023-04-02 06:04:54,596 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2305 states, 2298 states have (on average 1.369886858137511) internal successors, (3148), 2301 states have internal predecessors, (3148), 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 06:04:54,601 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2305 states to 2305 states and 3151 transitions. [2023-04-02 06:04:54,602 INFO L78 Accepts]: Start accepts. Automaton has 2305 states and 3151 transitions. Word has length 57 [2023-04-02 06:04:54,602 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:04:54,602 INFO L495 AbstractCegarLoop]: Abstraction has 2305 states and 3151 transitions. [2023-04-02 06:04:54,602 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.5) internal successors, (54), 3 states have internal predecessors, (54), 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 06:04:54,602 INFO L276 IsEmpty]: Start isEmpty. Operand 2305 states and 3151 transitions. [2023-04-02 06:04:54,604 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2023-04-02 06:04:54,604 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:04:54,604 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] [2023-04-02 06:04:54,604 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-04-02 06:04:54,604 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting mainErr3ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 06:04:54,605 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:04:54,605 INFO L85 PathProgramCache]: Analyzing trace with hash 645686108, now seen corresponding path program 1 times [2023-04-02 06:04:54,605 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:04:54,605 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1530906195] [2023-04-02 06:04:54,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:04:54,605 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:04:54,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:04:55,003 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:04:55,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:04:55,026 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 06:04:55,027 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:04:55,027 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1530906195] [2023-04-02 06:04:55,027 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1530906195] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:04:55,027 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:04:55,027 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-04-02 06:04:55,027 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1646387129] [2023-04-02 06:04:55,027 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:04:55,028 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-04-02 06:04:55,028 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:04:55,028 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-04-02 06:04:55,028 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2023-04-02 06:04:55,028 INFO L87 Difference]: Start difference. First operand 2305 states and 3151 transitions. Second operand has 8 states, 7 states have (on average 7.857142857142857) internal successors, (55), 6 states have internal predecessors, (55), 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 06:04:56,854 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:04:56,855 INFO L93 Difference]: Finished difference Result 7381 states and 10310 transitions. [2023-04-02 06:04:56,856 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-04-02 06:04:56,857 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 7.857142857142857) internal successors, (55), 6 states have internal predecessors, (55), 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 58 [2023-04-02 06:04:56,857 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:04:56,875 INFO L225 Difference]: With dead ends: 7381 [2023-04-02 06:04:56,875 INFO L226 Difference]: Without dead ends: 6339 [2023-04-02 06:04:56,879 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=82, Invalid=190, Unknown=0, NotChecked=0, Total=272 [2023-04-02 06:04:56,879 INFO L413 NwaCegarLoop]: 253 mSDtfsCounter, 2789 mSDsluCounter, 359 mSDsCounter, 0 mSdLazyCounter, 837 mSolverCounterSat, 75 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2789 SdHoareTripleChecker+Valid, 612 SdHoareTripleChecker+Invalid, 912 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 75 IncrementalHoareTripleChecker+Valid, 837 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-04-02 06:04:56,879 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2789 Valid, 612 Invalid, 912 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [75 Valid, 837 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-04-02 06:04:56,884 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6339 states. [2023-04-02 06:04:57,103 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6339 to 2319. [2023-04-02 06:04:57,107 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2319 states, 2312 states have (on average 1.3693771626297577) internal successors, (3166), 2315 states have internal predecessors, (3166), 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 06:04:57,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2319 states to 2319 states and 3169 transitions. [2023-04-02 06:04:57,113 INFO L78 Accepts]: Start accepts. Automaton has 2319 states and 3169 transitions. Word has length 58 [2023-04-02 06:04:57,113 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:04:57,114 INFO L495 AbstractCegarLoop]: Abstraction has 2319 states and 3169 transitions. [2023-04-02 06:04:57,114 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 7.857142857142857) internal successors, (55), 6 states have internal predecessors, (55), 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 06:04:57,114 INFO L276 IsEmpty]: Start isEmpty. Operand 2319 states and 3169 transitions. [2023-04-02 06:04:57,115 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2023-04-02 06:04:57,116 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:04:57,116 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] [2023-04-02 06:04:57,116 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-04-02 06:04:57,116 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting mainErr2ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 06:04:57,116 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:04:57,116 INFO L85 PathProgramCache]: Analyzing trace with hash 2130478097, now seen corresponding path program 1 times [2023-04-02 06:04:57,117 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:04:57,118 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [709950732] [2023-04-02 06:04:57,119 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:04:57,119 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:04:57,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:04:57,531 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:04:57,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:04:57,553 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 06:04:57,553 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:04:57,553 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [709950732] [2023-04-02 06:04:57,553 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [709950732] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:04:57,553 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:04:57,553 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-04-02 06:04:57,554 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [869308346] [2023-04-02 06:04:57,554 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:04:57,554 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-04-02 06:04:57,554 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:04:57,554 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-04-02 06:04:57,555 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2023-04-02 06:04:57,555 INFO L87 Difference]: Start difference. First operand 2319 states and 3169 transitions. Second operand has 8 states, 7 states have (on average 7.857142857142857) internal successors, (55), 6 states have internal predecessors, (55), 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 06:05:00,074 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:05:00,074 INFO L93 Difference]: Finished difference Result 8137 states and 11427 transitions. [2023-04-02 06:05:00,075 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-04-02 06:05:00,076 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 7.857142857142857) internal successors, (55), 6 states have internal predecessors, (55), 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 58 [2023-04-02 06:05:00,076 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:05:00,096 INFO L225 Difference]: With dead ends: 8137 [2023-04-02 06:05:00,097 INFO L226 Difference]: Without dead ends: 7290 [2023-04-02 06:05:00,100 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=82, Invalid=190, Unknown=0, NotChecked=0, Total=272 [2023-04-02 06:05:00,101 INFO L413 NwaCegarLoop]: 304 mSDtfsCounter, 2117 mSDsluCounter, 464 mSDsCounter, 0 mSdLazyCounter, 1086 mSolverCounterSat, 66 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2117 SdHoareTripleChecker+Valid, 768 SdHoareTripleChecker+Invalid, 1152 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 66 IncrementalHoareTripleChecker+Valid, 1086 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-04-02 06:05:00,101 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2117 Valid, 768 Invalid, 1152 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [66 Valid, 1086 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-04-02 06:05:00,107 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7290 states. [2023-04-02 06:05:00,374 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7290 to 2341. [2023-04-02 06:05:00,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2341 states, 2334 states have (on average 1.369751499571551) internal successors, (3197), 2337 states have internal predecessors, (3197), 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 06:05:00,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2341 states to 2341 states and 3200 transitions. [2023-04-02 06:05:00,381 INFO L78 Accepts]: Start accepts. Automaton has 2341 states and 3200 transitions. Word has length 58 [2023-04-02 06:05:00,381 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:05:00,381 INFO L495 AbstractCegarLoop]: Abstraction has 2341 states and 3200 transitions. [2023-04-02 06:05:00,381 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 7.857142857142857) internal successors, (55), 6 states have internal predecessors, (55), 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 06:05:00,381 INFO L276 IsEmpty]: Start isEmpty. Operand 2341 states and 3200 transitions. [2023-04-02 06:05:00,383 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2023-04-02 06:05:00,383 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:05:00,383 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] [2023-04-02 06:05:00,383 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-04-02 06:05:00,383 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting mainErr1ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 06:05:00,384 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:05:00,384 INFO L85 PathProgramCache]: Analyzing trace with hash 446000278, now seen corresponding path program 1 times [2023-04-02 06:05:00,384 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:05:00,384 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1356765244] [2023-04-02 06:05:00,384 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:05:00,384 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:05:00,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:05:00,838 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:05:00,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:05:00,859 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 06:05:00,860 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:05:00,860 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1356765244] [2023-04-02 06:05:00,860 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1356765244] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:05:00,860 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:05:00,860 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-04-02 06:05:00,860 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2115709409] [2023-04-02 06:05:00,860 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:05:00,860 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-04-02 06:05:00,860 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:05:00,861 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-04-02 06:05:00,861 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2023-04-02 06:05:00,861 INFO L87 Difference]: Start difference. First operand 2341 states and 3200 transitions. Second operand has 8 states, 7 states have (on average 7.857142857142857) internal successors, (55), 6 states have internal predecessors, (55), 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 06:05:03,355 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:05:03,355 INFO L93 Difference]: Finished difference Result 9902 states and 13855 transitions. [2023-04-02 06:05:03,355 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-04-02 06:05:03,356 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 7.857142857142857) internal successors, (55), 6 states have internal predecessors, (55), 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 58 [2023-04-02 06:05:03,356 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:05:03,381 INFO L225 Difference]: With dead ends: 9902 [2023-04-02 06:05:03,381 INFO L226 Difference]: Without dead ends: 8934 [2023-04-02 06:05:03,385 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=82, Invalid=190, Unknown=0, NotChecked=0, Total=272 [2023-04-02 06:05:03,386 INFO L413 NwaCegarLoop]: 258 mSDtfsCounter, 3263 mSDsluCounter, 410 mSDsCounter, 0 mSdLazyCounter, 885 mSolverCounterSat, 78 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3263 SdHoareTripleChecker+Valid, 668 SdHoareTripleChecker+Invalid, 963 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 78 IncrementalHoareTripleChecker+Valid, 885 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-04-02 06:05:03,386 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3263 Valid, 668 Invalid, 963 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [78 Valid, 885 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-04-02 06:05:03,392 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8934 states. [2023-04-02 06:05:03,727 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8934 to 2375. [2023-04-02 06:05:03,732 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2375 states, 2368 states have (on average 1.3686655405405406) internal successors, (3241), 2371 states have internal predecessors, (3241), 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 06:05:03,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2375 states to 2375 states and 3244 transitions. [2023-04-02 06:05:03,737 INFO L78 Accepts]: Start accepts. Automaton has 2375 states and 3244 transitions. Word has length 58 [2023-04-02 06:05:03,737 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:05:03,737 INFO L495 AbstractCegarLoop]: Abstraction has 2375 states and 3244 transitions. [2023-04-02 06:05:03,737 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 7.857142857142857) internal successors, (55), 6 states have internal predecessors, (55), 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 06:05:03,737 INFO L276 IsEmpty]: Start isEmpty. Operand 2375 states and 3244 transitions. [2023-04-02 06:05:03,739 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2023-04-02 06:05:03,739 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:05:03,739 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 06:05:03,739 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-04-02 06:05:03,739 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting mainErr3ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 06:05:03,740 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:05:03,740 INFO L85 PathProgramCache]: Analyzing trace with hash -835700472, now seen corresponding path program 1 times [2023-04-02 06:05:03,740 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:05:03,740 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [784707387] [2023-04-02 06:05:03,740 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:05:03,740 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:05:03,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:05:04,370 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:05:04,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:05:04,415 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 06:05:04,415 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:05:04,415 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [784707387] [2023-04-02 06:05:04,415 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [784707387] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:05:04,415 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:05:04,416 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-04-02 06:05:04,416 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [93737690] [2023-04-02 06:05:04,416 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:05:04,416 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-04-02 06:05:04,416 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:05:04,417 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-04-02 06:05:04,417 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2023-04-02 06:05:04,417 INFO L87 Difference]: Start difference. First operand 2375 states and 3244 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 06:05:07,139 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:05:07,140 INFO L93 Difference]: Finished difference Result 5539 states and 7737 transitions. [2023-04-02 06:05:07,140 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-04-02 06:05:07,140 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 06:05:07,140 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:05:07,151 INFO L225 Difference]: With dead ends: 5539 [2023-04-02 06:05:07,151 INFO L226 Difference]: Without dead ends: 5534 [2023-04-02 06:05:07,153 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 87 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=156, Invalid=396, Unknown=0, NotChecked=0, Total=552 [2023-04-02 06:05:07,153 INFO L413 NwaCegarLoop]: 284 mSDtfsCounter, 2430 mSDsluCounter, 904 mSDsCounter, 0 mSdLazyCounter, 1367 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2430 SdHoareTripleChecker+Valid, 1188 SdHoareTripleChecker+Invalid, 1394 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 1367 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2023-04-02 06:05:07,153 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2430 Valid, 1188 Invalid, 1394 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 1367 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2023-04-02 06:05:07,157 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5534 states. [2023-04-02 06:05:07,490 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5534 to 2375. [2023-04-02 06:05:07,493 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2375 states, 2368 states have (on average 1.367820945945946) internal successors, (3239), 2371 states have internal predecessors, (3239), 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 06:05:07,496 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2375 states to 2375 states and 3242 transitions. [2023-04-02 06:05:07,496 INFO L78 Accepts]: Start accepts. Automaton has 2375 states and 3242 transitions. Word has length 59 [2023-04-02 06:05:07,497 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:05:07,497 INFO L495 AbstractCegarLoop]: Abstraction has 2375 states and 3242 transitions. [2023-04-02 06:05:07,497 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 06:05:07,497 INFO L276 IsEmpty]: Start isEmpty. Operand 2375 states and 3242 transitions. [2023-04-02 06:05:07,499 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2023-04-02 06:05:07,499 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:05:07,499 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 06:05:07,499 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-04-02 06:05:07,499 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting mainErr2ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 06:05:07,499 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:05:07,499 INFO L85 PathProgramCache]: Analyzing trace with hash 218360112, now seen corresponding path program 1 times [2023-04-02 06:05:07,500 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:05:07,500 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1514479469] [2023-04-02 06:05:07,500 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:05:07,500 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:05:07,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:05:08,093 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:05:08,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:05:08,118 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 06:05:08,119 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:05:08,119 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1514479469] [2023-04-02 06:05:08,119 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1514479469] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:05:08,119 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:05:08,119 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-04-02 06:05:08,119 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2041858692] [2023-04-02 06:05:08,119 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:05:08,120 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-04-02 06:05:08,120 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:05:08,120 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-04-02 06:05:08,120 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2023-04-02 06:05:08,120 INFO L87 Difference]: Start difference. First operand 2375 states and 3242 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 06:05:11,054 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:05:11,055 INFO L93 Difference]: Finished difference Result 7216 states and 10109 transitions. [2023-04-02 06:05:11,056 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-04-02 06:05:11,056 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 06:05:11,056 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:05:11,067 INFO L225 Difference]: With dead ends: 7216 [2023-04-02 06:05:11,067 INFO L226 Difference]: Without dead ends: 5826 [2023-04-02 06:05:11,071 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 87 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=156, Invalid=396, Unknown=0, NotChecked=0, Total=552 [2023-04-02 06:05:11,072 INFO L413 NwaCegarLoop]: 292 mSDtfsCounter, 2534 mSDsluCounter, 872 mSDsCounter, 0 mSdLazyCounter, 1384 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2534 SdHoareTripleChecker+Valid, 1164 SdHoareTripleChecker+Invalid, 1421 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 1384 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-04-02 06:05:11,072 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2534 Valid, 1164 Invalid, 1421 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 1384 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-04-02 06:05:11,076 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5826 states. [2023-04-02 06:05:11,465 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5826 to 2346. [2023-04-02 06:05:11,468 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2346 states, 2339 states have (on average 1.367250961949551) internal successors, (3198), 2342 states have internal predecessors, (3198), 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 06:05:11,472 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2346 states to 2346 states and 3201 transitions. [2023-04-02 06:05:11,472 INFO L78 Accepts]: Start accepts. Automaton has 2346 states and 3201 transitions. Word has length 59 [2023-04-02 06:05:11,472 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:05:11,472 INFO L495 AbstractCegarLoop]: Abstraction has 2346 states and 3201 transitions. [2023-04-02 06:05:11,472 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 06:05:11,472 INFO L276 IsEmpty]: Start isEmpty. Operand 2346 states and 3201 transitions. [2023-04-02 06:05:11,474 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2023-04-02 06:05:11,474 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:05:11,474 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 06:05:11,474 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-04-02 06:05:11,475 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting mainErr1ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 06:05:11,475 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:05:11,475 INFO L85 PathProgramCache]: Analyzing trace with hash -1978304003, now seen corresponding path program 1 times [2023-04-02 06:05:11,475 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:05:11,475 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1483206730] [2023-04-02 06:05:11,475 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:05:11,475 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:05:11,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:05:12,015 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:05:12,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:05:12,084 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 06:05:12,085 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:05:12,085 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1483206730] [2023-04-02 06:05:12,085 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1483206730] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:05:12,085 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:05:12,085 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-04-02 06:05:12,085 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [152834148] [2023-04-02 06:05:12,085 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:05:12,086 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-04-02 06:05:12,086 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:05:12,086 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-04-02 06:05:12,086 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2023-04-02 06:05:12,086 INFO L87 Difference]: Start difference. First operand 2346 states and 3201 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 06:05:14,784 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:05:14,784 INFO L93 Difference]: Finished difference Result 5774 states and 8057 transitions. [2023-04-02 06:05:14,785 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-04-02 06:05:14,786 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 06:05:14,786 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:05:14,795 INFO L225 Difference]: With dead ends: 5774 [2023-04-02 06:05:14,796 INFO L226 Difference]: Without dead ends: 4230 [2023-04-02 06:05:14,799 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=81, Invalid=191, Unknown=0, NotChecked=0, Total=272 [2023-04-02 06:05:14,800 INFO L413 NwaCegarLoop]: 300 mSDtfsCounter, 2448 mSDsluCounter, 646 mSDsCounter, 0 mSdLazyCounter, 1184 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2448 SdHoareTripleChecker+Valid, 946 SdHoareTripleChecker+Invalid, 1204 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 1184 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2023-04-02 06:05:14,800 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2448 Valid, 946 Invalid, 1204 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 1184 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2023-04-02 06:05:14,803 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4230 states. [2023-04-02 06:05:15,193 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4230 to 2259. [2023-04-02 06:05:15,196 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2259 states, 2252 states have (on average 1.3658969804618117) internal successors, (3076), 2255 states have internal predecessors, (3076), 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 06:05:15,200 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2259 states to 2259 states and 3079 transitions. [2023-04-02 06:05:15,200 INFO L78 Accepts]: Start accepts. Automaton has 2259 states and 3079 transitions. Word has length 59 [2023-04-02 06:05:15,200 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:05:15,200 INFO L495 AbstractCegarLoop]: Abstraction has 2259 states and 3079 transitions. [2023-04-02 06:05:15,200 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 06:05:15,200 INFO L276 IsEmpty]: Start isEmpty. Operand 2259 states and 3079 transitions. [2023-04-02 06:05:15,202 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2023-04-02 06:05:15,202 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:05:15,202 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 06:05:15,202 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-04-02 06:05:15,203 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting mainErr3ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 06:05:15,203 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:05:15,203 INFO L85 PathProgramCache]: Analyzing trace with hash -1090105926, now seen corresponding path program 1 times [2023-04-02 06:05:15,203 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:05:15,203 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [966664344] [2023-04-02 06:05:15,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:05:15,203 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:05:15,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:05:15,540 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:05:15,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:05:15,551 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 06:05:15,551 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:05:15,552 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [966664344] [2023-04-02 06:05:15,552 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [966664344] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:05:15,552 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:05:15,552 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-04-02 06:05:15,552 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1028326919] [2023-04-02 06:05:15,552 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:05:15,552 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-04-02 06:05:15,552 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:05:15,553 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-04-02 06:05:15,553 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-04-02 06:05:15,553 INFO L87 Difference]: Start difference. First operand 2259 states and 3079 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 06:05:16,875 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:05:16,876 INFO L93 Difference]: Finished difference Result 3204 states and 4407 transitions. [2023-04-02 06:05:16,876 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-04-02 06:05:16,876 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 06:05:16,877 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:05:16,880 INFO L225 Difference]: With dead ends: 3204 [2023-04-02 06:05:16,880 INFO L226 Difference]: Without dead ends: 2266 [2023-04-02 06:05:16,882 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-04-02 06:05:16,882 INFO L413 NwaCegarLoop]: 496 mSDtfsCounter, 222 mSDsluCounter, 302 mSDsCounter, 0 mSdLazyCounter, 523 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 222 SdHoareTripleChecker+Valid, 798 SdHoareTripleChecker+Invalid, 534 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 523 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-04-02 06:05:16,882 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [222 Valid, 798 Invalid, 534 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 523 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-04-02 06:05:16,884 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2266 states. [2023-04-02 06:05:17,268 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2266 to 2259. [2023-04-02 06:05:17,271 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2259 states, 2252 states have (on average 1.352575488454707) internal successors, (3046), 2255 states have internal predecessors, (3046), 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 06:05:17,274 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2259 states to 2259 states and 3049 transitions. [2023-04-02 06:05:17,274 INFO L78 Accepts]: Start accepts. Automaton has 2259 states and 3049 transitions. Word has length 60 [2023-04-02 06:05:17,274 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:05:17,274 INFO L495 AbstractCegarLoop]: Abstraction has 2259 states and 3049 transitions. [2023-04-02 06:05:17,274 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 06:05:17,275 INFO L276 IsEmpty]: Start isEmpty. Operand 2259 states and 3049 transitions. [2023-04-02 06:05:17,276 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2023-04-02 06:05:17,276 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:05:17,276 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 06:05:17,276 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-04-02 06:05:17,276 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting mainErr2ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 06:05:17,277 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:05:17,277 INFO L85 PathProgramCache]: Analyzing trace with hash -980349230, now seen corresponding path program 1 times [2023-04-02 06:05:17,277 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:05:17,277 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2040890899] [2023-04-02 06:05:17,277 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:05:17,277 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:05:17,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:05:17,591 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:05:17,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:05:17,601 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 06:05:17,601 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:05:17,601 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2040890899] [2023-04-02 06:05:17,601 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2040890899] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:05:17,601 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:05:17,601 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-04-02 06:05:17,601 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1839807613] [2023-04-02 06:05:17,601 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:05:17,602 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-04-02 06:05:17,602 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:05:17,602 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-04-02 06:05:17,602 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-04-02 06:05:17,602 INFO L87 Difference]: Start difference. First operand 2259 states and 3049 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 06:05:18,952 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:05:18,952 INFO L93 Difference]: Finished difference Result 3261 states and 4439 transitions. [2023-04-02 06:05:18,953 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-04-02 06:05:18,953 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 06:05:18,953 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:05:18,957 INFO L225 Difference]: With dead ends: 3261 [2023-04-02 06:05:18,957 INFO L226 Difference]: Without dead ends: 2265 [2023-04-02 06:05:18,958 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-04-02 06:05:18,959 INFO L413 NwaCegarLoop]: 513 mSDtfsCounter, 238 mSDsluCounter, 291 mSDsCounter, 0 mSdLazyCounter, 530 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 238 SdHoareTripleChecker+Valid, 804 SdHoareTripleChecker+Invalid, 535 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 530 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-04-02 06:05:18,959 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [238 Valid, 804 Invalid, 535 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 530 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-04-02 06:05:18,960 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2265 states. [2023-04-02 06:05:19,373 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2265 to 2259. [2023-04-02 06:05:19,376 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2259 states, 2252 states have (on average 1.3401420959147425) internal successors, (3018), 2255 states have internal predecessors, (3018), 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 06:05:19,379 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2259 states to 2259 states and 3021 transitions. [2023-04-02 06:05:19,379 INFO L78 Accepts]: Start accepts. Automaton has 2259 states and 3021 transitions. Word has length 60 [2023-04-02 06:05:19,379 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:05:19,379 INFO L495 AbstractCegarLoop]: Abstraction has 2259 states and 3021 transitions. [2023-04-02 06:05:19,379 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 06:05:19,379 INFO L276 IsEmpty]: Start isEmpty. Operand 2259 states and 3021 transitions. [2023-04-02 06:05:19,381 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2023-04-02 06:05:19,381 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:05:19,381 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 06:05:19,381 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-04-02 06:05:19,381 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting mainErr1ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 06:05:19,381 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:05:19,382 INFO L85 PathProgramCache]: Analyzing trace with hash -555343976, now seen corresponding path program 1 times [2023-04-02 06:05:19,382 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:05:19,382 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1633777169] [2023-04-02 06:05:19,382 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:05:19,382 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:05:19,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:05:19,762 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:05:19,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:05:19,772 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 06:05:19,773 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:05:19,773 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1633777169] [2023-04-02 06:05:19,773 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1633777169] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:05:19,773 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:05:19,773 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-04-02 06:05:19,773 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1694543516] [2023-04-02 06:05:19,773 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:05:19,773 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-04-02 06:05:19,774 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:05:19,774 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-04-02 06:05:19,774 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-04-02 06:05:19,774 INFO L87 Difference]: Start difference. First operand 2259 states and 3021 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 06:05:21,156 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:05:21,156 INFO L93 Difference]: Finished difference Result 3349 states and 4509 transitions. [2023-04-02 06:05:21,156 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-04-02 06:05:21,157 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 06:05:21,157 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:05:21,160 INFO L225 Difference]: With dead ends: 3349 [2023-04-02 06:05:21,161 INFO L226 Difference]: Without dead ends: 2250 [2023-04-02 06:05:21,163 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-04-02 06:05:21,163 INFO L413 NwaCegarLoop]: 502 mSDtfsCounter, 257 mSDsluCounter, 317 mSDsCounter, 0 mSdLazyCounter, 521 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 257 SdHoareTripleChecker+Valid, 819 SdHoareTripleChecker+Invalid, 526 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 521 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-04-02 06:05:21,163 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [257 Valid, 819 Invalid, 526 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 521 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-04-02 06:05:21,165 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2250 states. [2023-04-02 06:05:21,567 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2250 to 2244. [2023-04-02 06:05:21,570 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2244 states, 2237 states have (on average 1.3205185516316496) internal successors, (2954), 2240 states have internal predecessors, (2954), 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 06:05:21,573 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2244 states to 2244 states and 2957 transitions. [2023-04-02 06:05:21,573 INFO L78 Accepts]: Start accepts. Automaton has 2244 states and 2957 transitions. Word has length 60 [2023-04-02 06:05:21,573 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:05:21,573 INFO L495 AbstractCegarLoop]: Abstraction has 2244 states and 2957 transitions. [2023-04-02 06:05:21,573 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 06:05:21,574 INFO L276 IsEmpty]: Start isEmpty. Operand 2244 states and 2957 transitions. [2023-04-02 06:05:21,575 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2023-04-02 06:05:21,575 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:05:21,575 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 06:05:21,576 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-04-02 06:05:21,576 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting mainErr1ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 06:05:21,576 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:05:21,576 INFO L85 PathProgramCache]: Analyzing trace with hash 606388403, now seen corresponding path program 1 times [2023-04-02 06:05:21,576 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:05:21,576 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [824624029] [2023-04-02 06:05:21,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:05:21,576 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:05:21,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:05:21,898 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:05:21,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:05:21,908 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 06:05:21,908 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:05:21,908 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [824624029] [2023-04-02 06:05:21,908 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [824624029] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:05:21,908 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:05:21,908 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-04-02 06:05:21,908 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [481303257] [2023-04-02 06:05:21,909 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:05:21,909 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-04-02 06:05:21,909 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:05:21,909 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-04-02 06:05:21,909 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-04-02 06:05:21,909 INFO L87 Difference]: Start difference. First operand 2244 states and 2957 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 06:05:23,454 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:05:23,454 INFO L93 Difference]: Finished difference Result 4008 states and 5345 transitions. [2023-04-02 06:05:23,481 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-04-02 06:05:23,481 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 06:05:23,481 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:05:23,487 INFO L225 Difference]: With dead ends: 4008 [2023-04-02 06:05:23,488 INFO L226 Difference]: Without dead ends: 2748 [2023-04-02 06:05:23,490 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-04-02 06:05:23,491 INFO L413 NwaCegarLoop]: 398 mSDtfsCounter, 349 mSDsluCounter, 155 mSDsCounter, 0 mSdLazyCounter, 471 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 349 SdHoareTripleChecker+Valid, 553 SdHoareTripleChecker+Invalid, 477 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 471 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-04-02 06:05:23,491 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [349 Valid, 553 Invalid, 477 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 471 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-04-02 06:05:23,495 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2748 states. [2023-04-02 06:05:23,916 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2748 to 2062. [2023-04-02 06:05:23,919 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2062 states, 2055 states have (on average 1.3226277372262774) internal successors, (2718), 2058 states have internal predecessors, (2718), 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 06:05:23,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2062 states to 2062 states and 2721 transitions. [2023-04-02 06:05:23,923 INFO L78 Accepts]: Start accepts. Automaton has 2062 states and 2721 transitions. Word has length 61 [2023-04-02 06:05:23,923 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:05:23,923 INFO L495 AbstractCegarLoop]: Abstraction has 2062 states and 2721 transitions. [2023-04-02 06:05:23,923 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 06:05:23,923 INFO L276 IsEmpty]: Start isEmpty. Operand 2062 states and 2721 transitions. [2023-04-02 06:05:23,925 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2023-04-02 06:05:23,925 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:05:23,926 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 06:05:23,926 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-04-02 06:05:23,926 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting mainErr1ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 06:05:23,926 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:05:23,926 INFO L85 PathProgramCache]: Analyzing trace with hash -1159586246, now seen corresponding path program 1 times [2023-04-02 06:05:23,926 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:05:23,926 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [39036165] [2023-04-02 06:05:23,926 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:05:23,927 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:05:23,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:05:25,242 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:05:25,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:05:25,252 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 06:05:25,252 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:05:25,252 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [39036165] [2023-04-02 06:05:25,253 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [39036165] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:05:25,253 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:05:25,253 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2023-04-02 06:05:25,253 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1383790248] [2023-04-02 06:05:25,253 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:05:25,253 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-04-02 06:05:25,253 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:05:25,254 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-04-02 06:05:25,254 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=332, Unknown=0, NotChecked=0, Total=380 [2023-04-02 06:05:25,254 INFO L87 Difference]: Start difference. First operand 2062 states and 2721 transitions. Second operand has 20 states, 20 states have (on average 2.95) internal successors, (59), 19 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 06:05:29,938 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:05:29,938 INFO L93 Difference]: Finished difference Result 3834 states and 5095 transitions. [2023-04-02 06:05:29,938 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2023-04-02 06:05:29,939 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 2.95) internal successors, (59), 19 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 06:05:29,939 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:05:29,944 INFO L225 Difference]: With dead ends: 3834 [2023-04-02 06:05:29,944 INFO L226 Difference]: Without dead ends: 3830 [2023-04-02 06:05:29,945 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 222 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=262, Invalid=1144, Unknown=0, NotChecked=0, Total=1406 [2023-04-02 06:05:29,946 INFO L413 NwaCegarLoop]: 483 mSDtfsCounter, 3329 mSDsluCounter, 5226 mSDsCounter, 0 mSdLazyCounter, 3525 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3329 SdHoareTripleChecker+Valid, 5709 SdHoareTripleChecker+Invalid, 3557 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 3525 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2023-04-02 06:05:29,946 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3329 Valid, 5709 Invalid, 3557 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 3525 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2023-04-02 06:05:29,948 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3830 states. [2023-04-02 06:05:30,377 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3830 to 2074. [2023-04-02 06:05:30,380 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2074 states, 2067 states have (on average 1.3231736816642476) internal successors, (2735), 2070 states have internal predecessors, (2735), 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 06:05:30,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2074 states to 2074 states and 2738 transitions. [2023-04-02 06:05:30,382 INFO L78 Accepts]: Start accepts. Automaton has 2074 states and 2738 transitions. Word has length 62 [2023-04-02 06:05:30,382 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:05:30,382 INFO L495 AbstractCegarLoop]: Abstraction has 2074 states and 2738 transitions. [2023-04-02 06:05:30,382 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 2.95) internal successors, (59), 19 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 06:05:30,382 INFO L276 IsEmpty]: Start isEmpty. Operand 2074 states and 2738 transitions. [2023-04-02 06:05:30,383 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2023-04-02 06:05:30,384 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:05:30,384 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 06:05:30,384 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-04-02 06:05:30,384 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting mainErr2ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 06:05:30,384 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:05:30,384 INFO L85 PathProgramCache]: Analyzing trace with hash 1428623930, now seen corresponding path program 1 times [2023-04-02 06:05:30,384 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:05:30,384 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1705078599] [2023-04-02 06:05:30,384 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:05:30,385 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:05:30,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:05:31,476 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:05:31,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:05:31,487 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 06:05:31,488 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:05:31,488 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1705078599] [2023-04-02 06:05:31,488 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1705078599] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:05:31,488 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:05:31,488 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2023-04-02 06:05:31,488 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [320385924] [2023-04-02 06:05:31,488 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:05:31,489 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-04-02 06:05:31,489 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:05:31,489 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-04-02 06:05:31,489 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=333, Unknown=0, NotChecked=0, Total=380 [2023-04-02 06:05:31,489 INFO L87 Difference]: Start difference. First operand 2074 states and 2738 transitions. Second operand has 20 states, 20 states have (on average 2.95) internal successors, (59), 19 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 06:05:36,495 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:05:36,495 INFO L93 Difference]: Finished difference Result 3933 states and 5229 transitions. [2023-04-02 06:05:36,495 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2023-04-02 06:05:36,495 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 2.95) internal successors, (59), 19 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 06:05:36,496 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:05:36,500 INFO L225 Difference]: With dead ends: 3933 [2023-04-02 06:05:36,501 INFO L226 Difference]: Without dead ends: 3929 [2023-04-02 06:05:36,502 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 220 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=286, Invalid=1196, Unknown=0, NotChecked=0, Total=1482 [2023-04-02 06:05:36,502 INFO L413 NwaCegarLoop]: 471 mSDtfsCounter, 2945 mSDsluCounter, 5461 mSDsCounter, 0 mSdLazyCounter, 3644 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2945 SdHoareTripleChecker+Valid, 5932 SdHoareTripleChecker+Invalid, 3676 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 3644 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2023-04-02 06:05:36,502 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2945 Valid, 5932 Invalid, 3676 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 3644 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2023-04-02 06:05:36,504 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3929 states. [2023-04-02 06:05:36,960 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3929 to 2081. [2023-04-02 06:05:36,962 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2081 states, 2074 states have (on average 1.3230472516875602) internal successors, (2744), 2077 states have internal predecessors, (2744), 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 06:05:36,964 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2081 states to 2081 states and 2747 transitions. [2023-04-02 06:05:36,964 INFO L78 Accepts]: Start accepts. Automaton has 2081 states and 2747 transitions. Word has length 62 [2023-04-02 06:05:36,964 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:05:36,964 INFO L495 AbstractCegarLoop]: Abstraction has 2081 states and 2747 transitions. [2023-04-02 06:05:36,965 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 2.95) internal successors, (59), 19 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 06:05:36,965 INFO L276 IsEmpty]: Start isEmpty. Operand 2081 states and 2747 transitions. [2023-04-02 06:05:36,966 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2023-04-02 06:05:36,966 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:05:36,966 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 06:05:36,966 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-04-02 06:05:36,966 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 06:05:36,967 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:05:36,967 INFO L85 PathProgramCache]: Analyzing trace with hash 736496832, now seen corresponding path program 1 times [2023-04-02 06:05:36,967 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:05:36,967 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [293964060] [2023-04-02 06:05:36,967 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:05:36,967 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:05:36,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:05:37,706 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:05:37,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:05:37,722 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 06:05:37,722 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:05:37,722 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [293964060] [2023-04-02 06:05:37,722 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [293964060] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:05:37,723 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:05:37,723 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-04-02 06:05:37,723 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1116499478] [2023-04-02 06:05:37,723 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:05:37,724 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-04-02 06:05:37,725 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:05:37,725 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-04-02 06:05:37,725 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2023-04-02 06:05:37,725 INFO L87 Difference]: Start difference. First operand 2081 states and 2747 transitions. Second operand has 11 states, 11 states have (on average 5.363636363636363) internal successors, (59), 10 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 06:05:41,414 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:05:41,414 INFO L93 Difference]: Finished difference Result 3621 states and 4836 transitions. [2023-04-02 06:05:41,414 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-04-02 06:05:41,415 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 5.363636363636363) internal successors, (59), 10 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 06:05:41,415 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:05:41,420 INFO L225 Difference]: With dead ends: 3621 [2023-04-02 06:05:41,420 INFO L226 Difference]: Without dead ends: 3388 [2023-04-02 06:05:41,421 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=120, Invalid=300, Unknown=0, NotChecked=0, Total=420 [2023-04-02 06:05:41,421 INFO L413 NwaCegarLoop]: 542 mSDtfsCounter, 2459 mSDsluCounter, 1631 mSDsCounter, 0 mSdLazyCounter, 1153 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2459 SdHoareTripleChecker+Valid, 2173 SdHoareTripleChecker+Invalid, 1172 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 1153 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2023-04-02 06:05:41,422 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2459 Valid, 2173 Invalid, 1172 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 1153 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2023-04-02 06:05:41,424 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3388 states. [2023-04-02 06:05:42,007 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3388 to 2016. [2023-04-02 06:05:42,009 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2016 states, 2010 states have (on average 1.3248756218905473) internal successors, (2663), 2012 states have internal predecessors, (2663), 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 06:05:42,011 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2016 states to 2016 states and 2666 transitions. [2023-04-02 06:05:42,011 INFO L78 Accepts]: Start accepts. Automaton has 2016 states and 2666 transitions. Word has length 62 [2023-04-02 06:05:42,012 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:05:42,012 INFO L495 AbstractCegarLoop]: Abstraction has 2016 states and 2666 transitions. [2023-04-02 06:05:42,012 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 5.363636363636363) internal successors, (59), 10 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 06:05:42,012 INFO L276 IsEmpty]: Start isEmpty. Operand 2016 states and 2666 transitions. [2023-04-02 06:05:42,013 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2023-04-02 06:05:42,013 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:05:42,013 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 06:05:42,013 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-04-02 06:05:42,014 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting mainErr3ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 06:05:42,014 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:05:42,014 INFO L85 PathProgramCache]: Analyzing trace with hash 1230171735, now seen corresponding path program 1 times [2023-04-02 06:05:42,014 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:05:42,014 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [527117209] [2023-04-02 06:05:42,014 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:05:42,014 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:05:42,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:05:42,369 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:05:42,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:05:42,379 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 06:05:42,379 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:05:42,379 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [527117209] [2023-04-02 06:05:42,380 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [527117209] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:05:42,380 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:05:42,380 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-04-02 06:05:42,380 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1356881539] [2023-04-02 06:05:42,380 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:05:42,380 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-04-02 06:05:42,380 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:05:42,381 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-04-02 06:05:42,381 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-04-02 06:05:42,381 INFO L87 Difference]: Start difference. First operand 2016 states and 2666 transitions. Second operand has 4 states, 4 states have (on average 14.75) internal successors, (59), 3 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 06:05:43,952 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:05:43,952 INFO L93 Difference]: Finished difference Result 3665 states and 4894 transitions. [2023-04-02 06:05:43,952 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-04-02 06:05:43,952 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.75) internal successors, (59), 3 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 06:05:43,953 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:05:43,955 INFO L225 Difference]: With dead ends: 3665 [2023-04-02 06:05:43,955 INFO L226 Difference]: Without dead ends: 2421 [2023-04-02 06:05:43,956 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-04-02 06:05:43,957 INFO L413 NwaCegarLoop]: 274 mSDtfsCounter, 263 mSDsluCounter, 138 mSDsCounter, 0 mSdLazyCounter, 362 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 263 SdHoareTripleChecker+Valid, 412 SdHoareTripleChecker+Invalid, 371 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 362 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-04-02 06:05:43,957 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [263 Valid, 412 Invalid, 371 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 362 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-04-02 06:05:43,958 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2421 states. [2023-04-02 06:05:44,440 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2421 to 1889. [2023-04-02 06:05:44,441 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1889 states, 1884 states have (on average 1.328556263269639) internal successors, (2503), 1885 states have internal predecessors, (2503), 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 06:05:44,443 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1889 states to 1889 states and 2506 transitions. [2023-04-02 06:05:44,443 INFO L78 Accepts]: Start accepts. Automaton has 1889 states and 2506 transitions. Word has length 62 [2023-04-02 06:05:44,444 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:05:44,444 INFO L495 AbstractCegarLoop]: Abstraction has 1889 states and 2506 transitions. [2023-04-02 06:05:44,444 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.75) internal successors, (59), 3 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 06:05:44,444 INFO L276 IsEmpty]: Start isEmpty. Operand 1889 states and 2506 transitions. [2023-04-02 06:05:44,445 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2023-04-02 06:05:44,445 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:05:44,445 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] [2023-04-02 06:05:44,445 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2023-04-02 06:05:44,445 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting mainErr1ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 06:05:44,446 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:05:44,446 INFO L85 PathProgramCache]: Analyzing trace with hash -774949502, now seen corresponding path program 1 times [2023-04-02 06:05:44,446 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:05:44,446 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [36981738] [2023-04-02 06:05:44,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:05:44,446 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:05:44,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:05:45,148 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:05:45,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:05:45,162 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 06:05:45,162 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:05:45,162 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [36981738] [2023-04-02 06:05:45,162 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [36981738] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:05:45,162 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:05:45,162 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2023-04-02 06:05:45,162 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1077457020] [2023-04-02 06:05:45,162 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:05:45,163 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-04-02 06:05:45,163 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:05:45,163 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-04-02 06:05:45,163 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=130, Unknown=0, NotChecked=0, Total=156 [2023-04-02 06:05:45,163 INFO L87 Difference]: Start difference. First operand 1889 states and 2506 transitions. Second operand has 13 states, 13 states have (on average 4.615384615384615) internal successors, (60), 12 states have internal predecessors, (60), 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 06:05:48,656 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:05:48,656 INFO L93 Difference]: Finished difference Result 3642 states and 4876 transitions. [2023-04-02 06:05:48,656 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-04-02 06:05:48,657 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 4.615384615384615) internal successors, (60), 12 states have internal predecessors, (60), 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 63 [2023-04-02 06:05:48,657 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:05:48,661 INFO L225 Difference]: With dead ends: 3642 [2023-04-02 06:05:48,661 INFO L226 Difference]: Without dead ends: 3431 [2023-04-02 06:05:48,662 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 87 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=151, Invalid=499, Unknown=0, NotChecked=0, Total=650 [2023-04-02 06:05:48,663 INFO L413 NwaCegarLoop]: 513 mSDtfsCounter, 1898 mSDsluCounter, 3036 mSDsCounter, 0 mSdLazyCounter, 1326 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1898 SdHoareTripleChecker+Valid, 3549 SdHoareTripleChecker+Invalid, 1348 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 1326 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2023-04-02 06:05:48,663 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1898 Valid, 3549 Invalid, 1348 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 1326 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2023-04-02 06:05:48,665 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3431 states. [2023-04-02 06:05:49,204 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3431 to 1852. [2023-04-02 06:05:49,206 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1852 states, 1848 states have (on average 1.329004329004329) internal successors, (2456), 1848 states have internal predecessors, (2456), 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 06:05:49,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1852 states to 1852 states and 2459 transitions. [2023-04-02 06:05:49,208 INFO L78 Accepts]: Start accepts. Automaton has 1852 states and 2459 transitions. Word has length 63 [2023-04-02 06:05:49,208 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:05:49,208 INFO L495 AbstractCegarLoop]: Abstraction has 1852 states and 2459 transitions. [2023-04-02 06:05:49,209 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 4.615384615384615) internal successors, (60), 12 states have internal predecessors, (60), 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 06:05:49,209 INFO L276 IsEmpty]: Start isEmpty. Operand 1852 states and 2459 transitions. [2023-04-02 06:05:49,211 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2023-04-02 06:05:49,211 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:05:49,211 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 06:05:49,211 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2023-04-02 06:05:49,211 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 06:05:49,212 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:05:49,212 INFO L85 PathProgramCache]: Analyzing trace with hash -1098072661, now seen corresponding path program 1 times [2023-04-02 06:05:49,212 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:05:49,212 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1912162533] [2023-04-02 06:05:49,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:05:49,212 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:05:49,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:05:49,606 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:05:49,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:05:49,617 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 06:05:49,617 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:05:49,618 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1912162533] [2023-04-02 06:05:49,618 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1912162533] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:05:49,618 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:05:49,618 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-04-02 06:05:49,618 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [799891033] [2023-04-02 06:05:49,618 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:05:49,618 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-04-02 06:05:49,618 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:05:49,619 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-04-02 06:05:49,619 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-04-02 06:05:49,619 INFO L87 Difference]: Start difference. First operand 1852 states and 2459 transitions. Second operand has 6 states, 6 states have (on average 11.5) internal successors, (69), 5 states have internal predecessors, (69), 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 06:05:51,513 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:05:51,513 INFO L93 Difference]: Finished difference Result 4254 states and 5808 transitions. [2023-04-02 06:05:51,515 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-04-02 06:05:51,516 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.5) internal successors, (69), 5 states have internal predecessors, (69), 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 72 [2023-04-02 06:05:51,516 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:05:51,519 INFO L225 Difference]: With dead ends: 4254 [2023-04-02 06:05:51,519 INFO L226 Difference]: Without dead ends: 3136 [2023-04-02 06:05:51,521 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2023-04-02 06:05:51,521 INFO L413 NwaCegarLoop]: 273 mSDtfsCounter, 1064 mSDsluCounter, 461 mSDsCounter, 0 mSdLazyCounter, 347 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1064 SdHoareTripleChecker+Valid, 734 SdHoareTripleChecker+Invalid, 358 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 347 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-04-02 06:05:51,521 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1064 Valid, 734 Invalid, 358 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 347 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-04-02 06:05:51,523 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3136 states. [2023-04-02 06:05:52,374 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3136 to 2765. [2023-04-02 06:05:52,378 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2765 states, 2761 states have (on average 1.3295907279971024) internal successors, (3671), 2761 states have internal predecessors, (3671), 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 06:05:52,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2765 states to 2765 states and 3674 transitions. [2023-04-02 06:05:52,381 INFO L78 Accepts]: Start accepts. Automaton has 2765 states and 3674 transitions. Word has length 72 [2023-04-02 06:05:52,381 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:05:52,381 INFO L495 AbstractCegarLoop]: Abstraction has 2765 states and 3674 transitions. [2023-04-02 06:05:52,381 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.5) internal successors, (69), 5 states have internal predecessors, (69), 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 06:05:52,381 INFO L276 IsEmpty]: Start isEmpty. Operand 2765 states and 3674 transitions. [2023-04-02 06:05:52,385 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2023-04-02 06:05:52,385 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:05:52,385 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 06:05:52,385 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2023-04-02 06:05:52,385 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 06:05:52,385 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:05:52,385 INFO L85 PathProgramCache]: Analyzing trace with hash 1892774540, now seen corresponding path program 1 times [2023-04-02 06:05:52,385 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:05:52,386 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1526599763] [2023-04-02 06:05:52,386 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:05:52,386 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:05:52,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:05:52,777 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:05:52,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:05:52,787 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 06:05:52,787 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:05:52,788 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1526599763] [2023-04-02 06:05:52,788 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1526599763] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:05:52,788 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:05:52,788 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-04-02 06:05:52,788 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1206270663] [2023-04-02 06:05:52,788 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:05:52,788 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-04-02 06:05:52,788 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:05:52,789 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-04-02 06:05:52,789 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-04-02 06:05:52,789 INFO L87 Difference]: Start difference. First operand 2765 states and 3674 transitions. Second operand has 6 states, 6 states have (on average 11.666666666666666) internal successors, (70), 5 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 06:05:54,520 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:05:54,520 INFO L93 Difference]: Finished difference Result 2771 states and 3677 transitions. [2023-04-02 06:05:54,520 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-04-02 06:05:54,520 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.666666666666666) internal successors, (70), 5 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 06:05:54,521 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:05:54,523 INFO L225 Difference]: With dead ends: 2771 [2023-04-02 06:05:54,523 INFO L226 Difference]: Without dead ends: 2300 [2023-04-02 06:05:54,525 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-04-02 06:05:54,525 INFO L413 NwaCegarLoop]: 447 mSDtfsCounter, 567 mSDsluCounter, 291 mSDsCounter, 0 mSdLazyCounter, 550 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 567 SdHoareTripleChecker+Valid, 738 SdHoareTripleChecker+Invalid, 559 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 550 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-04-02 06:05:54,525 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [567 Valid, 738 Invalid, 559 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 550 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-04-02 06:05:54,526 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2300 states. [2023-04-02 06:05:55,320 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2300 to 2296. [2023-04-02 06:05:55,323 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2296 states, 2292 states have (on average 1.3337696335078535) internal successors, (3057), 2292 states have internal predecessors, (3057), 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 06:05:55,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2296 states to 2296 states and 3060 transitions. [2023-04-02 06:05:55,325 INFO L78 Accepts]: Start accepts. Automaton has 2296 states and 3060 transitions. Word has length 73 [2023-04-02 06:05:55,325 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:05:55,326 INFO L495 AbstractCegarLoop]: Abstraction has 2296 states and 3060 transitions. [2023-04-02 06:05:55,326 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.666666666666666) internal successors, (70), 5 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 06:05:55,326 INFO L276 IsEmpty]: Start isEmpty. Operand 2296 states and 3060 transitions. [2023-04-02 06:05:55,328 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2023-04-02 06:05:55,328 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:05:55,329 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] [2023-04-02 06:05:55,329 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2023-04-02 06:05:55,329 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 06:05:55,329 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:05:55,329 INFO L85 PathProgramCache]: Analyzing trace with hash -1376100827, now seen corresponding path program 1 times [2023-04-02 06:05:55,330 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:05:55,330 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [43189040] [2023-04-02 06:05:55,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:05:55,330 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:05:55,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:05:55,731 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:05:55,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:05:55,741 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 06:05:55,742 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:05:55,742 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [43189040] [2023-04-02 06:05:55,742 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [43189040] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:05:55,742 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:05:55,742 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-04-02 06:05:55,742 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [638424020] [2023-04-02 06:05:55,743 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:05:55,744 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-04-02 06:05:55,744 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:05:55,744 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-04-02 06:05:55,744 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-04-02 06:05:55,744 INFO L87 Difference]: Start difference. First operand 2296 states and 3060 transitions. Second operand has 4 states, 4 states have (on average 17.75) internal successors, (71), 3 states have internal predecessors, (71), 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 06:05:58,363 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:05:58,364 INFO L93 Difference]: Finished difference Result 5414 states and 7330 transitions. [2023-04-02 06:05:58,364 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-04-02 06:05:58,365 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 17.75) internal successors, (71), 3 states have internal predecessors, (71), 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 74 [2023-04-02 06:05:58,365 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:05:58,369 INFO L225 Difference]: With dead ends: 5414 [2023-04-02 06:05:58,369 INFO L226 Difference]: Without dead ends: 3674 [2023-04-02 06:05:58,371 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-04-02 06:05:58,372 INFO L413 NwaCegarLoop]: 353 mSDtfsCounter, 123 mSDsluCounter, 208 mSDsCounter, 0 mSdLazyCounter, 369 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 123 SdHoareTripleChecker+Valid, 561 SdHoareTripleChecker+Invalid, 375 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 369 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-04-02 06:05:58,372 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [123 Valid, 561 Invalid, 375 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 369 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-04-02 06:05:58,374 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3674 states. [2023-04-02 06:05:59,599 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3674 to 3464. [2023-04-02 06:05:59,603 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3464 states, 3460 states have (on average 1.3326589595375722) internal successors, (4611), 3460 states have internal predecessors, (4611), 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 06:05:59,607 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3464 states to 3464 states and 4614 transitions. [2023-04-02 06:05:59,607 INFO L78 Accepts]: Start accepts. Automaton has 3464 states and 4614 transitions. Word has length 74 [2023-04-02 06:05:59,607 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:05:59,607 INFO L495 AbstractCegarLoop]: Abstraction has 3464 states and 4614 transitions. [2023-04-02 06:05:59,607 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.75) internal successors, (71), 3 states have internal predecessors, (71), 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 06:05:59,607 INFO L276 IsEmpty]: Start isEmpty. Operand 3464 states and 4614 transitions. [2023-04-02 06:05:59,609 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2023-04-02 06:05:59,609 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:05:59,610 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] [2023-04-02 06:05:59,610 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2023-04-02 06:05:59,610 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 06:05:59,610 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:05:59,610 INFO L85 PathProgramCache]: Analyzing trace with hash 671385253, now seen corresponding path program 1 times [2023-04-02 06:05:59,610 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:05:59,610 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [273287798] [2023-04-02 06:05:59,611 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:05:59,611 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:05:59,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:06:00,005 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:06:00,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:06:00,015 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 06:06:00,015 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:06:00,015 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [273287798] [2023-04-02 06:06:00,015 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [273287798] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:06:00,015 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:06:00,015 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-04-02 06:06:00,016 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1086268398] [2023-04-02 06:06:00,016 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:06:00,016 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-04-02 06:06:00,016 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:06:00,016 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-04-02 06:06:00,016 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-04-02 06:06:00,017 INFO L87 Difference]: Start difference. First operand 3464 states and 4614 transitions. Second operand has 4 states, 4 states have (on average 18.0) internal successors, (72), 3 states have internal predecessors, (72), 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 06:06:03,283 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:06:03,283 INFO L93 Difference]: Finished difference Result 8956 states and 12092 transitions. [2023-04-02 06:06:03,284 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-04-02 06:06:03,284 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 18.0) internal successors, (72), 3 states have internal predecessors, (72), 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 75 [2023-04-02 06:06:03,284 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:06:03,292 INFO L225 Difference]: With dead ends: 8956 [2023-04-02 06:06:03,292 INFO L226 Difference]: Without dead ends: 6070 [2023-04-02 06:06:03,295 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-04-02 06:06:03,295 INFO L413 NwaCegarLoop]: 337 mSDtfsCounter, 112 mSDsluCounter, 212 mSDsCounter, 0 mSdLazyCounter, 354 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 112 SdHoareTripleChecker+Valid, 549 SdHoareTripleChecker+Invalid, 359 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 354 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-04-02 06:06:03,296 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [112 Valid, 549 Invalid, 359 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 354 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-04-02 06:06:03,299 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6070 states. [2023-04-02 06:06:05,368 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6070 to 5572. [2023-04-02 06:06:05,373 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5572 states, 5568 states have (on average 1.3338721264367817) internal successors, (7427), 5568 states have internal predecessors, (7427), 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 06:06:05,379 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5572 states to 5572 states and 7430 transitions. [2023-04-02 06:06:05,380 INFO L78 Accepts]: Start accepts. Automaton has 5572 states and 7430 transitions. Word has length 75 [2023-04-02 06:06:05,380 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:06:05,380 INFO L495 AbstractCegarLoop]: Abstraction has 5572 states and 7430 transitions. [2023-04-02 06:06:05,380 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.0) internal successors, (72), 3 states have internal predecessors, (72), 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 06:06:05,380 INFO L276 IsEmpty]: Start isEmpty. Operand 5572 states and 7430 transitions. [2023-04-02 06:06:05,382 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2023-04-02 06:06:05,382 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:06:05,382 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 06:06:05,382 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2023-04-02 06:06:05,382 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 06:06:05,383 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:06:05,383 INFO L85 PathProgramCache]: Analyzing trace with hash -2051167304, now seen corresponding path program 1 times [2023-04-02 06:06:05,383 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:06:05,383 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2040372918] [2023-04-02 06:06:05,383 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:06:05,383 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:06:05,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:06:05,770 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:06:05,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:06:05,779 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 06:06:05,779 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:06:05,779 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2040372918] [2023-04-02 06:06:05,779 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2040372918] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:06:05,780 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:06:05,780 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-04-02 06:06:05,780 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1905225097] [2023-04-02 06:06:05,780 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:06:05,780 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-04-02 06:06:05,780 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:06:05,780 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-04-02 06:06:05,780 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-04-02 06:06:05,781 INFO L87 Difference]: Start difference. First operand 5572 states and 7430 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 06:06:10,642 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:06:10,643 INFO L93 Difference]: Finished difference Result 15000 states and 20112 transitions. [2023-04-02 06:06:10,643 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-04-02 06:06:10,643 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 06:06:10,643 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:06:10,655 INFO L225 Difference]: With dead ends: 15000 [2023-04-02 06:06:10,655 INFO L226 Difference]: Without dead ends: 10006 [2023-04-02 06:06:10,660 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-04-02 06:06:10,660 INFO L413 NwaCegarLoop]: 319 mSDtfsCounter, 99 mSDsluCounter, 214 mSDsCounter, 0 mSdLazyCounter, 344 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 99 SdHoareTripleChecker+Valid, 533 SdHoareTripleChecker+Invalid, 350 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 344 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-04-02 06:06:10,660 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [99 Valid, 533 Invalid, 350 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 344 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-04-02 06:06:10,666 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10006 states. [2023-04-02 06:06:14,377 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10006 to 9172. [2023-04-02 06:06:14,385 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9172 states, 9168 states have (on average 1.3266797556719023) internal successors, (12163), 9168 states have internal predecessors, (12163), 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 06:06:14,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9172 states to 9172 states and 12166 transitions. [2023-04-02 06:06:14,400 INFO L78 Accepts]: Start accepts. Automaton has 9172 states and 12166 transitions. Word has length 77 [2023-04-02 06:06:14,400 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:06:14,400 INFO L495 AbstractCegarLoop]: Abstraction has 9172 states and 12166 transitions. [2023-04-02 06:06:14,400 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 06:06:14,400 INFO L276 IsEmpty]: Start isEmpty. Operand 9172 states and 12166 transitions. [2023-04-02 06:06:14,402 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2023-04-02 06:06:14,402 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:06:14,402 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 06:06:14,402 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2023-04-02 06:06:14,403 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 06:06:14,403 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:06:14,403 INFO L85 PathProgramCache]: Analyzing trace with hash -344695582, now seen corresponding path program 1 times [2023-04-02 06:06:14,403 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:06:14,403 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1639128996] [2023-04-02 06:06:14,403 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:06:14,403 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:06:14,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:06:14,876 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:06:14,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:06:14,890 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 06:06:14,890 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:06:14,890 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1639128996] [2023-04-02 06:06:14,891 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1639128996] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:06:14,891 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:06:14,891 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-04-02 06:06:14,891 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [506366479] [2023-04-02 06:06:14,891 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:06:14,891 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-04-02 06:06:14,891 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:06:14,892 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-04-02 06:06:14,892 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-04-02 06:06:14,892 INFO L87 Difference]: Start difference. First operand 9172 states and 12166 transitions. Second operand has 7 states, 7 states have (on average 10.857142857142858) internal successors, (76), 6 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 06:06:23,986 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:06:23,987 INFO L93 Difference]: Finished difference Result 19604 states and 25640 transitions. [2023-04-02 06:06:23,987 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-04-02 06:06:23,987 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.857142857142858) internal successors, (76), 6 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 06:06:23,988 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:06:24,010 INFO L225 Difference]: With dead ends: 19604 [2023-04-02 06:06:24,011 INFO L226 Difference]: Without dead ends: 19602 [2023-04-02 06:06:24,014 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2023-04-02 06:06:24,014 INFO L413 NwaCegarLoop]: 308 mSDtfsCounter, 345 mSDsluCounter, 1009 mSDsCounter, 0 mSdLazyCounter, 370 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 345 SdHoareTripleChecker+Valid, 1317 SdHoareTripleChecker+Invalid, 385 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 370 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-04-02 06:06:24,015 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [345 Valid, 1317 Invalid, 385 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 370 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-04-02 06:06:24,027 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19602 states. [2023-04-02 06:06:28,392 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19602 to 10084. [2023-04-02 06:06:28,401 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10084 states, 10080 states have (on average 1.2971230158730158) internal successors, (13075), 10080 states have internal predecessors, (13075), 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 06:06:28,416 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10084 states to 10084 states and 13078 transitions. [2023-04-02 06:06:28,416 INFO L78 Accepts]: Start accepts. Automaton has 10084 states and 13078 transitions. Word has length 79 [2023-04-02 06:06:28,416 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:06:28,417 INFO L495 AbstractCegarLoop]: Abstraction has 10084 states and 13078 transitions. [2023-04-02 06:06:28,417 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.857142857142858) internal successors, (76), 6 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 06:06:28,417 INFO L276 IsEmpty]: Start isEmpty. Operand 10084 states and 13078 transitions. [2023-04-02 06:06:28,419 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2023-04-02 06:06:28,419 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:06:28,419 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] [2023-04-02 06:06:28,419 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2023-04-02 06:06:28,419 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 06:06:28,419 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:06:28,420 INFO L85 PathProgramCache]: Analyzing trace with hash 419056987, now seen corresponding path program 1 times [2023-04-02 06:06:28,420 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:06:28,420 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [281679144] [2023-04-02 06:06:28,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:06:28,420 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:06:28,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:06:28,787 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:06:28,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:06:28,797 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 06:06:28,797 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:06:28,797 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [281679144] [2023-04-02 06:06:28,797 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [281679144] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:06:28,797 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:06:28,797 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-04-02 06:06:28,797 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1007138370] [2023-04-02 06:06:28,798 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:06:28,798 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-04-02 06:06:28,798 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:06:28,798 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-04-02 06:06:28,798 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-04-02 06:06:28,799 INFO L87 Difference]: Start difference. First operand 10084 states and 13078 transitions. Second operand has 4 states, 4 states have (on average 19.25) internal successors, (77), 3 states have internal predecessors, (77), 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 06:06:36,075 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:06:36,075 INFO L93 Difference]: Finished difference Result 24404 states and 31636 transitions. [2023-04-02 06:06:36,075 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-04-02 06:06:36,075 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 19.25) internal successors, (77), 3 states have internal predecessors, (77), 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 80 [2023-04-02 06:06:36,076 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:06:36,095 INFO L225 Difference]: With dead ends: 24404 [2023-04-02 06:06:36,095 INFO L226 Difference]: Without dead ends: 14898 [2023-04-02 06:06:36,106 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-04-02 06:06:36,107 INFO L413 NwaCegarLoop]: 277 mSDtfsCounter, 197 mSDsluCounter, 128 mSDsCounter, 0 mSdLazyCounter, 308 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 197 SdHoareTripleChecker+Valid, 405 SdHoareTripleChecker+Invalid, 313 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 308 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-04-02 06:06:36,107 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [197 Valid, 405 Invalid, 313 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 308 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-04-02 06:06:36,115 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14898 states. [2023-04-02 06:06:42,603 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14898 to 14896. [2023-04-02 06:06:42,616 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14896 states, 14892 states have (on average 1.2800832661831856) internal successors, (19063), 14892 states have internal predecessors, (19063), 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 06:06:42,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14896 states to 14896 states and 19066 transitions. [2023-04-02 06:06:42,641 INFO L78 Accepts]: Start accepts. Automaton has 14896 states and 19066 transitions. Word has length 80 [2023-04-02 06:06:42,642 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:06:42,642 INFO L495 AbstractCegarLoop]: Abstraction has 14896 states and 19066 transitions. [2023-04-02 06:06:42,642 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.25) internal successors, (77), 3 states have internal predecessors, (77), 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 06:06:42,642 INFO L276 IsEmpty]: Start isEmpty. Operand 14896 states and 19066 transitions. [2023-04-02 06:06:42,644 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2023-04-02 06:06:42,644 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:06:42,644 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 06:06:42,644 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2023-04-02 06:06:42,644 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 06:06:42,645 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:06:42,645 INFO L85 PathProgramCache]: Analyzing trace with hash 624753339, now seen corresponding path program 1 times [2023-04-02 06:06:42,645 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:06:42,645 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [949692478] [2023-04-02 06:06:42,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:06:42,645 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:06:42,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:06:43,041 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:06:43,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:06:43,050 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 06:06:43,050 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:06:43,050 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [949692478] [2023-04-02 06:06:43,050 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [949692478] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:06:43,051 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:06:43,051 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-04-02 06:06:43,051 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [243080896] [2023-04-02 06:06:43,051 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:06:43,051 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-04-02 06:06:43,051 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:06:43,052 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-04-02 06:06:43,052 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-04-02 06:06:43,052 INFO L87 Difference]: Start difference. First operand 14896 states and 19066 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 06:06:52,164 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:06:52,164 INFO L93 Difference]: Finished difference Result 21678 states and 27910 transitions. [2023-04-02 06:06:52,165 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-04-02 06:06:52,165 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 06:06:52,165 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:06:52,192 INFO L225 Difference]: With dead ends: 21678 [2023-04-02 06:06:52,192 INFO L226 Difference]: Without dead ends: 18058 [2023-04-02 06:06:52,200 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2023-04-02 06:06:52,200 INFO L413 NwaCegarLoop]: 358 mSDtfsCounter, 637 mSDsluCounter, 479 mSDsCounter, 0 mSdLazyCounter, 445 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 637 SdHoareTripleChecker+Valid, 837 SdHoareTripleChecker+Invalid, 453 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 445 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-04-02 06:06:52,200 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [637 Valid, 837 Invalid, 453 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 445 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-04-02 06:06:52,213 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18058 states. [2023-04-02 06:06:59,659 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18058 to 16834. [2023-04-02 06:06:59,672 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16834 states, 16830 states have (on average 1.276470588235294) internal successors, (21483), 16830 states have internal predecessors, (21483), 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 06:06:59,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16834 states to 16834 states and 21486 transitions. [2023-04-02 06:06:59,695 INFO L78 Accepts]: Start accepts. Automaton has 16834 states and 21486 transitions. Word has length 81 [2023-04-02 06:06:59,695 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:06:59,695 INFO L495 AbstractCegarLoop]: Abstraction has 16834 states and 21486 transitions. [2023-04-02 06:06:59,696 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 06:06:59,696 INFO L276 IsEmpty]: Start isEmpty. Operand 16834 states and 21486 transitions. [2023-04-02 06:06:59,701 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2023-04-02 06:06:59,701 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:06:59,701 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 06:06:59,701 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2023-04-02 06:06:59,702 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 06:06:59,702 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:06:59,702 INFO L85 PathProgramCache]: Analyzing trace with hash -1562418484, now seen corresponding path program 1 times [2023-04-02 06:06:59,702 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:06:59,702 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [411718710] [2023-04-02 06:06:59,702 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:06:59,702 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:06:59,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:07:00,319 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:07:00,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:07:00,354 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 8 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 06:07:00,354 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:07:00,355 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [411718710] [2023-04-02 06:07:00,355 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [411718710] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-02 06:07:00,355 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [478805313] [2023-04-02 06:07:00,355 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:07:00,355 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 06:07:00,355 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-02 06:07:00,358 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 06:07:00,366 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 06:07:00,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:07:00,633 INFO L262 TraceCheckSpWp]: Trace formula consists of 1286 conjuncts, 15 conjunts are in the unsatisfiable core [2023-04-02 06:07:00,641 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-02 06:07:01,329 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 8 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 06:07:01,330 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-02 06:07:02,016 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 8 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 06:07:02,016 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [478805313] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-02 06:07:02,017 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-04-02 06:07:02,017 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 10, 10] total 27 [2023-04-02 06:07:02,017 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [645900667] [2023-04-02 06:07:02,017 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-04-02 06:07:02,017 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2023-04-02 06:07:02,018 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:07:02,018 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2023-04-02 06:07:02,018 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=108, Invalid=594, Unknown=0, NotChecked=0, Total=702 [2023-04-02 06:07:02,019 INFO L87 Difference]: Start difference. First operand 16834 states and 21486 transitions. Second operand has 27 states, 27 states have (on average 8.74074074074074) internal successors, (236), 25 states have internal predecessors, (236), 4 states have call successors, (5), 5 states have call predecessors, (5), 3 states have return successors, (3), 3 states have call predecessors, (3), 1 states have call successors, (3) [2023-04-02 06:07:37,426 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:07:37,426 INFO L93 Difference]: Finished difference Result 72462 states and 91813 transitions. [2023-04-02 06:07:37,426 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2023-04-02 06:07:37,427 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 8.74074074074074) internal successors, (236), 25 states have internal predecessors, (236), 4 states have call successors, (5), 5 states have call predecessors, (5), 3 states have return successors, (3), 3 states have call predecessors, (3), 1 states have call successors, (3) Word has length 99 [2023-04-02 06:07:37,427 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:07:37,534 INFO L225 Difference]: With dead ends: 72462 [2023-04-02 06:07:37,534 INFO L226 Difference]: Without dead ends: 64378 [2023-04-02 06:07:37,558 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 246 GetRequests, 186 SyntacticMatches, 0 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 823 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=874, Invalid=2908, Unknown=0, NotChecked=0, Total=3782 [2023-04-02 06:07:37,559 INFO L413 NwaCegarLoop]: 276 mSDtfsCounter, 3369 mSDsluCounter, 3001 mSDsCounter, 0 mSdLazyCounter, 3153 mSolverCounterSat, 73 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3369 SdHoareTripleChecker+Valid, 3277 SdHoareTripleChecker+Invalid, 3226 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 73 IncrementalHoareTripleChecker+Valid, 3153 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2023-04-02 06:07:37,559 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3369 Valid, 3277 Invalid, 3226 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [73 Valid, 3153 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2023-04-02 06:07:37,610 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64378 states. [2023-04-02 06:07:46,330 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64378 to 17513. [2023-04-02 06:07:46,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17513 states, 17509 states have (on average 1.274316066023188) internal successors, (22312), 17509 states have internal predecessors, (22312), 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 06:07:46,382 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17513 states to 17513 states and 22315 transitions. [2023-04-02 06:07:46,382 INFO L78 Accepts]: Start accepts. Automaton has 17513 states and 22315 transitions. Word has length 99 [2023-04-02 06:07:46,382 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:07:46,382 INFO L495 AbstractCegarLoop]: Abstraction has 17513 states and 22315 transitions. [2023-04-02 06:07:46,383 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 8.74074074074074) internal successors, (236), 25 states have internal predecessors, (236), 4 states have call successors, (5), 5 states have call predecessors, (5), 3 states have return successors, (3), 3 states have call predecessors, (3), 1 states have call successors, (3) [2023-04-02 06:07:46,383 INFO L276 IsEmpty]: Start isEmpty. Operand 17513 states and 22315 transitions. [2023-04-02 06:07:46,390 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2023-04-02 06:07:46,390 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:07:46,391 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 06:07:46,400 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-04-02 06:07:46,598 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 06:07:46,600 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 06:07:46,601 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:07:46,601 INFO L85 PathProgramCache]: Analyzing trace with hash -1007447472, now seen corresponding path program 1 times [2023-04-02 06:07:46,601 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:07:46,601 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1965300995] [2023-04-02 06:07:46,601 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:07:46,601 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:07:46,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:07:47,079 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:07:47,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:07:47,102 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-04-02 06:07:47,102 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:07:47,102 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1965300995] [2023-04-02 06:07:47,103 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1965300995] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:07:47,103 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:07:47,103 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-04-02 06:07:47,103 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1908286891] [2023-04-02 06:07:47,103 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:07:47,104 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-04-02 06:07:47,104 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:07:47,104 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-04-02 06:07:47,104 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2023-04-02 06:07:47,104 INFO L87 Difference]: Start difference. First operand 17513 states and 22315 transitions. Second operand has 10 states, 9 states have (on average 10.0) internal successors, (90), 8 states have internal predecessors, (90), 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 06:08:07,169 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:08:07,169 INFO L93 Difference]: Finished difference Result 43183 states and 54934 transitions. [2023-04-02 06:08:07,169 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-04-02 06:08:07,170 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 10.0) internal successors, (90), 8 states have internal predecessors, (90), 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 99 [2023-04-02 06:08:07,170 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:08:07,223 INFO L225 Difference]: With dead ends: 43183 [2023-04-02 06:08:07,223 INFO L226 Difference]: Without dead ends: 35045 [2023-04-02 06:08:07,240 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 89 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=143, Invalid=363, Unknown=0, NotChecked=0, Total=506 [2023-04-02 06:08:07,241 INFO L413 NwaCegarLoop]: 234 mSDtfsCounter, 1772 mSDsluCounter, 716 mSDsCounter, 0 mSdLazyCounter, 1070 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1772 SdHoareTripleChecker+Valid, 950 SdHoareTripleChecker+Invalid, 1097 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 1070 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-04-02 06:08:07,241 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1772 Valid, 950 Invalid, 1097 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 1070 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-04-02 06:08:07,264 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35045 states. [2023-04-02 06:08:16,371 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35045 to 17458. [2023-04-02 06:08:16,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17458 states, 17454 states have (on average 1.2745502463618654) internal successors, (22246), 17454 states have internal predecessors, (22246), 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 06:08:16,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17458 states to 17458 states and 22249 transitions. [2023-04-02 06:08:16,422 INFO L78 Accepts]: Start accepts. Automaton has 17458 states and 22249 transitions. Word has length 99 [2023-04-02 06:08:16,422 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:08:16,422 INFO L495 AbstractCegarLoop]: Abstraction has 17458 states and 22249 transitions. [2023-04-02 06:08:16,422 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 10.0) internal successors, (90), 8 states have internal predecessors, (90), 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 06:08:16,423 INFO L276 IsEmpty]: Start isEmpty. Operand 17458 states and 22249 transitions. [2023-04-02 06:08:16,430 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2023-04-02 06:08:16,430 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:08:16,430 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 06:08:16,431 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2023-04-02 06:08:16,431 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 06:08:16,431 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:08:16,431 INFO L85 PathProgramCache]: Analyzing trace with hash -2046617012, now seen corresponding path program 1 times [2023-04-02 06:08:16,431 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:08:16,431 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1436332715] [2023-04-02 06:08:16,431 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:08:16,432 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:08:16,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:08:16,751 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:08:16,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:08:16,761 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-04-02 06:08:16,761 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:08:16,761 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1436332715] [2023-04-02 06:08:16,762 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1436332715] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:08:16,762 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:08:16,762 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-04-02 06:08:16,762 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1847803028] [2023-04-02 06:08:16,762 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:08:16,762 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-04-02 06:08:16,762 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:08:16,763 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-04-02 06:08:16,763 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-04-02 06:08:16,763 INFO L87 Difference]: Start difference. First operand 17458 states and 22249 transitions. Second operand has 4 states, 4 states have (on average 22.75) internal successors, (91), 3 states have internal predecessors, (91), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:08:26,182 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:08:26,183 INFO L93 Difference]: Finished difference Result 33660 states and 43032 transitions. [2023-04-02 06:08:26,183 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-04-02 06:08:26,184 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 22.75) internal successors, (91), 3 states have internal predecessors, (91), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 100 [2023-04-02 06:08:26,184 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:08:26,208 INFO L225 Difference]: With dead ends: 33660 [2023-04-02 06:08:26,208 INFO L226 Difference]: Without dead ends: 17252 [2023-04-02 06:08:26,225 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-04-02 06:08:26,225 INFO L413 NwaCegarLoop]: 203 mSDtfsCounter, 192 mSDsluCounter, 74 mSDsCounter, 0 mSdLazyCounter, 384 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 192 SdHoareTripleChecker+Valid, 277 SdHoareTripleChecker+Invalid, 401 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 384 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-04-02 06:08:26,226 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [192 Valid, 277 Invalid, 401 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 384 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-04-02 06:08:26,236 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17252 states. [2023-04-02 06:08:35,032 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17252 to 17252. [2023-04-02 06:08:35,047 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17252 states, 17248 states have (on average 1.260899814471243) internal successors, (21748), 17248 states have internal predecessors, (21748), 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 06:08:35,074 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17252 states to 17252 states and 21751 transitions. [2023-04-02 06:08:35,074 INFO L78 Accepts]: Start accepts. Automaton has 17252 states and 21751 transitions. Word has length 100 [2023-04-02 06:08:35,075 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:08:35,075 INFO L495 AbstractCegarLoop]: Abstraction has 17252 states and 21751 transitions. [2023-04-02 06:08:35,075 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 22.75) internal successors, (91), 3 states have internal predecessors, (91), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:08:35,075 INFO L276 IsEmpty]: Start isEmpty. Operand 17252 states and 21751 transitions. [2023-04-02 06:08:35,081 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2023-04-02 06:08:35,081 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:08:35,082 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 06:08:35,082 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2023-04-02 06:08:35,082 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 06:08:35,082 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:08:35,082 INFO L85 PathProgramCache]: Analyzing trace with hash -694380985, now seen corresponding path program 1 times [2023-04-02 06:08:35,083 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:08:35,083 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1807863695] [2023-04-02 06:08:35,083 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:08:35,083 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:08:35,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:08:35,431 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:08:35,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:08:35,440 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 06:08:35,440 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:08:35,440 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1807863695] [2023-04-02 06:08:35,440 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1807863695] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:08:35,440 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:08:35,440 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-04-02 06:08:35,441 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [621377084] [2023-04-02 06:08:35,441 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:08:35,441 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-04-02 06:08:35,441 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:08:35,441 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-04-02 06:08:35,442 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-04-02 06:08:35,442 INFO L87 Difference]: Start difference. First operand 17252 states and 21751 transitions. Second operand has 4 states, 4 states have (on average 24.25) internal successors, (97), 3 states have internal predecessors, (97), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)