/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.4.2.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-f954360 [2023-04-02 06:09:02,461 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-04-02 06:09:02,463 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-04-02 06:09:02,505 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-04-02 06:09:02,505 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-04-02 06:09:02,508 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-04-02 06:09:02,511 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-04-02 06:09:02,513 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-04-02 06:09:02,515 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-04-02 06:09:02,520 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-04-02 06:09:02,521 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-04-02 06:09:02,522 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-04-02 06:09:02,523 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-04-02 06:09:02,525 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-04-02 06:09:02,526 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-04-02 06:09:02,529 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-04-02 06:09:02,529 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-04-02 06:09:02,530 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-04-02 06:09:02,532 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-04-02 06:09:02,538 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-04-02 06:09:02,539 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-04-02 06:09:02,540 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-04-02 06:09:02,541 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-04-02 06:09:02,542 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-04-02 06:09:02,551 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2023-04-02 06:09:02,559 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-04-02 06:09:02,560 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-04-02 06:09:02,561 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-04-02 06:09:02,563 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 06:09:02,592 INFO L113 SettingsManager]: Loading preferences was successful [2023-04-02 06:09:02,592 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-04-02 06:09:02,593 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-04-02 06:09:02,593 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-04-02 06:09:02,594 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-04-02 06:09:02,594 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-04-02 06:09:02,595 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-04-02 06:09:02,595 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-04-02 06:09:02,595 INFO L138 SettingsManager]: * Use SBE=true [2023-04-02 06:09:02,595 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-04-02 06:09:02,596 INFO L138 SettingsManager]: * sizeof long=4 [2023-04-02 06:09:02,596 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-04-02 06:09:02,596 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-04-02 06:09:02,596 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-04-02 06:09:02,596 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-04-02 06:09:02,597 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-04-02 06:09:02,597 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-04-02 06:09:02,597 INFO L138 SettingsManager]: * sizeof long double=12 [2023-04-02 06:09:02,597 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-04-02 06:09:02,597 INFO L138 SettingsManager]: * Use constant arrays=true [2023-04-02 06:09:02,597 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-04-02 06:09:02,597 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-04-02 06:09:02,598 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-04-02 06:09:02,598 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-04-02 06:09:02,598 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-02 06:09:02,598 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-04-02 06:09:02,598 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-04-02 06:09:02,598 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-04-02 06:09:02,598 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-04-02 06:09:02,598 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-04-02 06:09:02,599 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-04-02 06:09:02,599 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-04-02 06:09:02,599 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-04-02 06:09:02,599 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-04-02 06:09:02,599 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-04-02 06:09:02,599 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-04-02 06:09:02,861 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-04-02 06:09:02,885 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-04-02 06:09:02,888 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-04-02 06:09:02,889 INFO L271 PluginConnector]: Initializing CDTParser... [2023-04-02 06:09:02,889 INFO L275 PluginConnector]: CDTParser initialized [2023-04-02 06:09:02,890 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.2.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c [2023-04-02 06:09:04,139 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-04-02 06:09:04,541 INFO L351 CDTParser]: Found 1 translation units. [2023-04-02 06:09:04,541 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.2.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c [2023-04-02 06:09:04,568 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b5dc5f8c8/7de6c5665d784a17b1977f84c5fbcd75/FLAG79d7cdf94 [2023-04-02 06:09:04,585 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b5dc5f8c8/7de6c5665d784a17b1977f84c5fbcd75 [2023-04-02 06:09:04,588 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-04-02 06:09:04,590 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2023-04-02 06:09:04,593 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-04-02 06:09:04,594 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-04-02 06:09:04,599 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-04-02 06:09:04,600 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.04 06:09:04" (1/1) ... [2023-04-02 06:09:04,602 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4833dd87 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 06:09:04, skipping insertion in model container [2023-04-02 06:09:04,602 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.04 06:09:04" (1/1) ... [2023-04-02 06:09:04,609 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-04-02 06:09:04,711 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-04-02 06:09:04,988 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.4.2.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c[10634,10647] [2023-04-02 06:09:05,098 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.4.2.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c[25860,25873] [2023-04-02 06:09:05,305 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-02 06:09:05,327 INFO L203 MainTranslator]: Completed pre-run [2023-04-02 06:09:05,401 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.4.2.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c[10634,10647] [2023-04-02 06:09:05,510 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.4.2.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c[25860,25873] [2023-04-02 06:09:05,657 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-02 06:09:05,676 INFO L208 MainTranslator]: Completed translation [2023-04-02 06:09:05,678 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 06:09:05 WrapperNode [2023-04-02 06:09:05,678 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-04-02 06:09:05,679 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-04-02 06:09:05,679 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-04-02 06:09:05,679 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-04-02 06:09:05,691 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 06:09:05" (1/1) ... [2023-04-02 06:09:05,691 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 06:09:05" (1/1) ... [2023-04-02 06:09:05,743 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 06:09:05" (1/1) ... [2023-04-02 06:09:05,744 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 06:09:05" (1/1) ... [2023-04-02 06:09:05,789 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 06:09:05" (1/1) ... [2023-04-02 06:09:05,815 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 06:09:05" (1/1) ... [2023-04-02 06:09:05,829 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 06:09:05" (1/1) ... [2023-04-02 06:09:05,838 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 06:09:05" (1/1) ... [2023-04-02 06:09:05,855 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-04-02 06:09:05,856 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-04-02 06:09:05,856 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-04-02 06:09:05,856 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-04-02 06:09:05,857 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 06:09:05" (1/1) ... [2023-04-02 06:09:05,864 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-02 06:09:05,875 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-02 06:09:05,894 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 06:09:05,920 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 06:09:05,941 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2023-04-02 06:09:05,941 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-04-02 06:09:05,941 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2023-04-02 06:09:05,941 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-04-02 06:09:05,942 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2023-04-02 06:09:05,942 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2023-04-02 06:09:05,942 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2023-04-02 06:09:05,942 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2023-04-02 06:09:05,942 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-04-02 06:09:05,942 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2023-04-02 06:09:05,942 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2023-04-02 06:09:05,942 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2023-04-02 06:09:05,942 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-04-02 06:09:05,942 INFO L130 BoogieDeclarations]: Found specification of procedure read [2023-04-02 06:09:05,942 INFO L130 BoogieDeclarations]: Found specification of procedure write [2023-04-02 06:09:05,942 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2023-04-02 06:09:05,943 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2023-04-02 06:09:05,943 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2023-04-02 06:09:05,943 INFO L130 BoogieDeclarations]: Found specification of procedure node4 [2023-04-02 06:09:05,943 INFO L130 BoogieDeclarations]: Found specification of procedure init [2023-04-02 06:09:05,943 INFO L130 BoogieDeclarations]: Found specification of procedure check [2023-04-02 06:09:05,943 INFO L130 BoogieDeclarations]: Found specification of procedure main [2023-04-02 06:09:05,943 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2023-04-02 06:09:05,943 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-04-02 06:09:05,943 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-04-02 06:09:05,943 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-04-02 06:09:05,943 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-04-02 06:09:05,943 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-04-02 06:09:06,237 INFO L236 CfgBuilder]: Building ICFG [2023-04-02 06:09:06,239 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-04-02 06:09:07,866 INFO L277 CfgBuilder]: Performing block encoding [2023-04-02 06:09:07,886 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-04-02 06:09:07,886 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-04-02 06:09:07,889 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.04 06:09:07 BoogieIcfgContainer [2023-04-02 06:09:07,890 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-04-02 06:09:07,893 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-04-02 06:09:07,894 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-04-02 06:09:07,897 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-04-02 06:09:07,897 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.04 06:09:04" (1/3) ... [2023-04-02 06:09:07,897 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@59c3d767 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.04 06:09:07, skipping insertion in model container [2023-04-02 06:09:07,898 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 06:09:05" (2/3) ... [2023-04-02 06:09:07,898 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@59c3d767 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.04 06:09:07, skipping insertion in model container [2023-04-02 06:09:07,898 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.04 06:09:07" (3/3) ... [2023-04-02 06:09:07,899 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_lcr-var-start-time.4.2.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c [2023-04-02 06:09:07,916 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-04-02 06:09:07,916 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-04-02 06:09:07,998 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-04-02 06:09:08,005 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;@743a006a, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-04-02 06:09:08,005 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-04-02 06:09:08,015 INFO L276 IsEmpty]: Start isEmpty. Operand has 710 states, 703 states have (on average 1.7823613086770982) internal successors, (1253), 705 states have internal predecessors, (1253), 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 06:09:08,046 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2023-04-02 06:09:08,047 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:09:08,047 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] [2023-04-02 06:09:08,048 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting mainErr1ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 06:09:08,054 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:09:08,054 INFO L85 PathProgramCache]: Analyzing trace with hash 2023447791, now seen corresponding path program 1 times [2023-04-02 06:09:08,064 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:09:08,065 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [498838905] [2023-04-02 06:09:08,066 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:09:08,066 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:09:08,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:09:09,151 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:09:09,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:09:09,206 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 06:09:09,207 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:09:09,207 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [498838905] [2023-04-02 06:09:09,207 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [498838905] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:09:09,208 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:09:09,208 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-04-02 06:09:09,209 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [842269057] [2023-04-02 06:09:09,210 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:09:09,214 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-04-02 06:09:09,214 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:09:09,255 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-04-02 06:09:09,256 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-04-02 06:09:09,260 INFO L87 Difference]: Start difference. First operand has 710 states, 703 states have (on average 1.7823613086770982) internal successors, (1253), 705 states have internal predecessors, (1253), 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 16.0) internal successors, (64), 3 states have internal predecessors, (64), 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 06:09:13,471 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:09:13,471 INFO L93 Difference]: Finished difference Result 1076 states and 1863 transitions. [2023-04-02 06:09:13,473 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-04-02 06:09:13,474 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.0) internal successors, (64), 3 states have internal predecessors, (64), 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 67 [2023-04-02 06:09:13,474 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:09:13,492 INFO L225 Difference]: With dead ends: 1076 [2023-04-02 06:09:13,492 INFO L226 Difference]: Without dead ends: 850 [2023-04-02 06:09:13,503 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-04-02 06:09:13,507 INFO L413 NwaCegarLoop]: 1254 mSDtfsCounter, 635 mSDsluCounter, 835 mSDsCounter, 0 mSdLazyCounter, 1264 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 635 SdHoareTripleChecker+Valid, 2089 SdHoareTripleChecker+Invalid, 1272 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 1264 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.5s IncrementalHoareTripleChecker+Time [2023-04-02 06:09:13,508 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [635 Valid, 2089 Invalid, 1272 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 1264 Invalid, 0 Unknown, 0 Unchecked, 3.5s Time] [2023-04-02 06:09:13,525 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 850 states. [2023-04-02 06:09:13,604 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 850 to 848. [2023-04-02 06:09:13,607 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 848 states, 843 states have (on average 1.3677342823250296) internal successors, (1153), 844 states have internal predecessors, (1153), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:09:13,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 848 states to 848 states and 1156 transitions. [2023-04-02 06:09:13,611 INFO L78 Accepts]: Start accepts. Automaton has 848 states and 1156 transitions. Word has length 67 [2023-04-02 06:09:13,611 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:09:13,612 INFO L495 AbstractCegarLoop]: Abstraction has 848 states and 1156 transitions. [2023-04-02 06:09:13,612 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.0) internal successors, (64), 3 states have internal predecessors, (64), 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 06:09:13,612 INFO L276 IsEmpty]: Start isEmpty. Operand 848 states and 1156 transitions. [2023-04-02 06:09:13,615 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2023-04-02 06:09:13,615 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:09:13,615 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] [2023-04-02 06:09:13,616 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-04-02 06:09:13,616 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 06:09:13,617 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:09:13,617 INFO L85 PathProgramCache]: Analyzing trace with hash 1670223494, now seen corresponding path program 1 times [2023-04-02 06:09:13,617 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:09:13,617 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [647107854] [2023-04-02 06:09:13,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:09:13,617 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:09:13,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:09:14,243 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:09:14,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:09:14,264 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 06:09:14,264 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:09:14,264 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [647107854] [2023-04-02 06:09:14,265 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [647107854] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:09:14,265 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:09:14,265 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-04-02 06:09:14,265 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1448967297] [2023-04-02 06:09:14,265 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:09:14,266 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-04-02 06:09:14,267 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:09:14,267 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-04-02 06:09:14,267 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-04-02 06:09:14,268 INFO L87 Difference]: Start difference. First operand 848 states and 1156 transitions. Second operand has 4 states, 4 states have (on average 16.25) internal successors, (65), 3 states have internal predecessors, (65), 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 06:09:17,448 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:09:17,448 INFO L93 Difference]: Finished difference Result 1419 states and 2001 transitions. [2023-04-02 06:09:17,449 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-04-02 06:09:17,449 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.25) internal successors, (65), 3 states have internal predecessors, (65), 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 68 [2023-04-02 06:09:17,449 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:09:17,454 INFO L225 Difference]: With dead ends: 1419 [2023-04-02 06:09:17,458 INFO L226 Difference]: Without dead ends: 1112 [2023-04-02 06:09:17,461 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-04-02 06:09:17,462 INFO L413 NwaCegarLoop]: 1023 mSDtfsCounter, 496 mSDsluCounter, 633 mSDsCounter, 0 mSdLazyCounter, 1050 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 496 SdHoareTripleChecker+Valid, 1656 SdHoareTripleChecker+Invalid, 1068 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 1050 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2023-04-02 06:09:17,462 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [496 Valid, 1656 Invalid, 1068 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 1050 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2023-04-02 06:09:17,465 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1112 states. [2023-04-02 06:09:17,518 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1112 to 1108. [2023-04-02 06:09:17,521 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1108 states, 1103 states have (on average 1.3871260199456028) internal successors, (1530), 1104 states have internal predecessors, (1530), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:09:17,525 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1108 states to 1108 states and 1533 transitions. [2023-04-02 06:09:17,526 INFO L78 Accepts]: Start accepts. Automaton has 1108 states and 1533 transitions. Word has length 68 [2023-04-02 06:09:17,526 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:09:17,526 INFO L495 AbstractCegarLoop]: Abstraction has 1108 states and 1533 transitions. [2023-04-02 06:09:17,527 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.25) internal successors, (65), 3 states have internal predecessors, (65), 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 06:09:17,527 INFO L276 IsEmpty]: Start isEmpty. Operand 1108 states and 1533 transitions. [2023-04-02 06:09:17,531 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2023-04-02 06:09:17,531 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:09:17,531 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] [2023-04-02 06:09:17,532 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-04-02 06:09:17,532 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 06:09:17,532 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:09:17,532 INFO L85 PathProgramCache]: Analyzing trace with hash -1478284681, now seen corresponding path program 1 times [2023-04-02 06:09:17,533 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:09:17,533 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1245361506] [2023-04-02 06:09:17,533 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:09:17,533 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:09:17,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:09:18,103 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:09:18,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:09:18,140 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 06:09:18,141 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:09:18,141 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1245361506] [2023-04-02 06:09:18,142 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1245361506] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:09:18,142 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:09:18,142 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-04-02 06:09:18,142 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [977161693] [2023-04-02 06:09:18,143 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:09:18,143 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-04-02 06:09:18,143 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:09:18,144 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-04-02 06:09:18,144 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-04-02 06:09:18,144 INFO L87 Difference]: Start difference. First operand 1108 states and 1533 transitions. Second operand has 4 states, 4 states have (on average 16.25) internal successors, (65), 3 states have internal predecessors, (65), 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 06:09:21,219 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:09:21,220 INFO L93 Difference]: Finished difference Result 2124 states and 2966 transitions. [2023-04-02 06:09:21,220 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-04-02 06:09:21,220 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.25) internal successors, (65), 3 states have internal predecessors, (65), 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 68 [2023-04-02 06:09:21,222 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:09:21,229 INFO L225 Difference]: With dead ends: 2124 [2023-04-02 06:09:21,229 INFO L226 Difference]: Without dead ends: 1699 [2023-04-02 06:09:21,234 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-04-02 06:09:21,237 INFO L413 NwaCegarLoop]: 1038 mSDtfsCounter, 552 mSDsluCounter, 649 mSDsCounter, 0 mSdLazyCounter, 1095 mSolverCounterSat, 44 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 552 SdHoareTripleChecker+Valid, 1687 SdHoareTripleChecker+Invalid, 1139 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 1095 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2023-04-02 06:09:21,239 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [552 Valid, 1687 Invalid, 1139 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [44 Valid, 1095 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2023-04-02 06:09:21,242 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1699 states. [2023-04-02 06:09:21,304 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1699 to 1695. [2023-04-02 06:09:21,307 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1695 states, 1690 states have (on average 1.3715976331360946) internal successors, (2318), 1691 states have internal predecessors, (2318), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:09:21,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1695 states to 1695 states and 2321 transitions. [2023-04-02 06:09:21,314 INFO L78 Accepts]: Start accepts. Automaton has 1695 states and 2321 transitions. Word has length 68 [2023-04-02 06:09:21,314 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:09:21,314 INFO L495 AbstractCegarLoop]: Abstraction has 1695 states and 2321 transitions. [2023-04-02 06:09:21,314 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.25) internal successors, (65), 3 states have internal predecessors, (65), 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 06:09:21,314 INFO L276 IsEmpty]: Start isEmpty. Operand 1695 states and 2321 transitions. [2023-04-02 06:09:21,317 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2023-04-02 06:09:21,318 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:09:21,318 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] [2023-04-02 06:09:21,318 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-04-02 06:09:21,318 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 06:09:21,319 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:09:21,319 INFO L85 PathProgramCache]: Analyzing trace with hash 895127407, now seen corresponding path program 1 times [2023-04-02 06:09:21,319 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:09:21,319 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1107223749] [2023-04-02 06:09:21,319 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:09:21,319 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:09:21,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:09:21,987 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:09:21,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:09:22,066 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 06:09:22,066 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:09:22,066 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1107223749] [2023-04-02 06:09:22,066 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1107223749] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:09:22,067 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:09:22,067 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-04-02 06:09:22,067 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1912199192] [2023-04-02 06:09:22,067 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:09:22,067 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-04-02 06:09:22,067 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:09:22,068 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-04-02 06:09:22,068 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-04-02 06:09:22,068 INFO L87 Difference]: Start difference. First operand 1695 states and 2321 transitions. Second operand has 6 states, 5 states have (on average 13.0) internal successors, (65), 4 states have internal predecessors, (65), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:09:24,911 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:09:24,912 INFO L93 Difference]: Finished difference Result 3742 states and 5242 transitions. [2023-04-02 06:09:24,913 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-04-02 06:09:24,913 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 13.0) internal successors, (65), 4 states have internal predecessors, (65), 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 68 [2023-04-02 06:09:24,916 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:09:24,928 INFO L225 Difference]: With dead ends: 3742 [2023-04-02 06:09:24,928 INFO L226 Difference]: Without dead ends: 2276 [2023-04-02 06:09:24,934 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2023-04-02 06:09:24,942 INFO L413 NwaCegarLoop]: 438 mSDtfsCounter, 2616 mSDsluCounter, 141 mSDsCounter, 0 mSdLazyCounter, 1161 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2616 SdHoareTripleChecker+Valid, 579 SdHoareTripleChecker+Invalid, 1178 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 1161 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2023-04-02 06:09:24,943 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2616 Valid, 579 Invalid, 1178 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 1161 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2023-04-02 06:09:24,947 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2276 states. [2023-04-02 06:09:25,100 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2276 to 2274. [2023-04-02 06:09:25,104 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2274 states, 2269 states have (on average 1.3997355663287792) internal successors, (3176), 2270 states have internal predecessors, (3176), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:09:25,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2274 states to 2274 states and 3179 transitions. [2023-04-02 06:09:25,113 INFO L78 Accepts]: Start accepts. Automaton has 2274 states and 3179 transitions. Word has length 68 [2023-04-02 06:09:25,113 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:09:25,114 INFO L495 AbstractCegarLoop]: Abstraction has 2274 states and 3179 transitions. [2023-04-02 06:09:25,114 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 13.0) internal successors, (65), 4 states have internal predecessors, (65), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:09:25,114 INFO L276 IsEmpty]: Start isEmpty. Operand 2274 states and 3179 transitions. [2023-04-02 06:09:25,118 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2023-04-02 06:09:25,118 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:09:25,118 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] [2023-04-02 06:09:25,118 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-04-02 06:09:25,119 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 06:09:25,119 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:09:25,119 INFO L85 PathProgramCache]: Analyzing trace with hash 1799239364, now seen corresponding path program 1 times [2023-04-02 06:09:25,119 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:09:25,119 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2061962714] [2023-04-02 06:09:25,119 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:09:25,120 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:09:25,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:09:25,646 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:09:25,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:09:25,664 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 06:09:25,665 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:09:25,665 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2061962714] [2023-04-02 06:09:25,665 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2061962714] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:09:25,665 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:09:25,665 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-04-02 06:09:25,665 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [193969992] [2023-04-02 06:09:25,665 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:09:25,666 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-04-02 06:09:25,666 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:09:25,666 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-04-02 06:09:25,667 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-04-02 06:09:25,667 INFO L87 Difference]: Start difference. First operand 2274 states and 3179 transitions. Second operand has 4 states, 4 states have (on average 16.5) internal successors, (66), 3 states have internal predecessors, (66), 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 06:09:28,240 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:09:28,240 INFO L93 Difference]: Finished difference Result 4697 states and 6636 transitions. [2023-04-02 06:09:28,241 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-04-02 06:09:28,241 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.5) internal successors, (66), 3 states have internal predecessors, (66), 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 69 [2023-04-02 06:09:28,241 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:09:28,252 INFO L225 Difference]: With dead ends: 4697 [2023-04-02 06:09:28,252 INFO L226 Difference]: Without dead ends: 3169 [2023-04-02 06:09:28,256 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-04-02 06:09:28,257 INFO L413 NwaCegarLoop]: 950 mSDtfsCounter, 581 mSDsluCounter, 538 mSDsCounter, 0 mSdLazyCounter, 967 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 581 SdHoareTripleChecker+Valid, 1488 SdHoareTripleChecker+Invalid, 977 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 967 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2023-04-02 06:09:28,257 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [581 Valid, 1488 Invalid, 977 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 967 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2023-04-02 06:09:28,260 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3169 states. [2023-04-02 06:09:28,452 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3169 to 3159. [2023-04-02 06:09:28,457 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3159 states, 3154 states have (on average 1.3798351299936589) internal successors, (4352), 3155 states have internal predecessors, (4352), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:09:28,468 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3159 states to 3159 states and 4355 transitions. [2023-04-02 06:09:28,468 INFO L78 Accepts]: Start accepts. Automaton has 3159 states and 4355 transitions. Word has length 69 [2023-04-02 06:09:28,469 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:09:28,469 INFO L495 AbstractCegarLoop]: Abstraction has 3159 states and 4355 transitions. [2023-04-02 06:09:28,469 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.5) internal successors, (66), 3 states have internal predecessors, (66), 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 06:09:28,469 INFO L276 IsEmpty]: Start isEmpty. Operand 3159 states and 4355 transitions. [2023-04-02 06:09:28,473 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2023-04-02 06:09:28,473 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:09:28,474 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 06:09:28,474 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-04-02 06:09:28,474 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 06:09:28,475 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:09:28,475 INFO L85 PathProgramCache]: Analyzing trace with hash -537824494, now seen corresponding path program 1 times [2023-04-02 06:09:28,476 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:09:28,476 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [892697769] [2023-04-02 06:09:28,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:09:28,476 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:09:28,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:09:29,083 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:09:29,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:09:29,121 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 06:09:29,121 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:09:29,121 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [892697769] [2023-04-02 06:09:29,122 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [892697769] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:09:29,122 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:09:29,122 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-04-02 06:09:29,122 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [130957618] [2023-04-02 06:09:29,122 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:09:29,122 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-04-02 06:09:29,123 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:09:29,123 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-04-02 06:09:29,123 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-04-02 06:09:29,124 INFO L87 Difference]: Start difference. First operand 3159 states and 4355 transitions. Second operand has 6 states, 5 states have (on average 13.4) internal successors, (67), 4 states have internal predecessors, (67), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:09:31,461 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:09:31,461 INFO L93 Difference]: Finished difference Result 6806 states and 9469 transitions. [2023-04-02 06:09:31,461 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-04-02 06:09:31,462 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 13.4) internal successors, (67), 4 states have internal predecessors, (67), 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 70 [2023-04-02 06:09:31,462 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:09:31,477 INFO L225 Difference]: With dead ends: 6806 [2023-04-02 06:09:31,477 INFO L226 Difference]: Without dead ends: 3986 [2023-04-02 06:09:31,483 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2023-04-02 06:09:31,484 INFO L413 NwaCegarLoop]: 384 mSDtfsCounter, 2286 mSDsluCounter, 143 mSDsCounter, 0 mSdLazyCounter, 1021 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2286 SdHoareTripleChecker+Valid, 527 SdHoareTripleChecker+Invalid, 1043 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 1021 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2023-04-02 06:09:31,484 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2286 Valid, 527 Invalid, 1043 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 1021 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2023-04-02 06:09:31,489 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3986 states. [2023-04-02 06:09:31,759 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3986 to 3970. [2023-04-02 06:09:31,767 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3970 states, 3965 states have (on average 1.3815889029003783) internal successors, (5478), 3966 states have internal predecessors, (5478), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:09:31,784 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3970 states to 3970 states and 5481 transitions. [2023-04-02 06:09:31,785 INFO L78 Accepts]: Start accepts. Automaton has 3970 states and 5481 transitions. Word has length 70 [2023-04-02 06:09:31,786 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:09:31,786 INFO L495 AbstractCegarLoop]: Abstraction has 3970 states and 5481 transitions. [2023-04-02 06:09:31,786 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 13.4) internal successors, (67), 4 states have internal predecessors, (67), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:09:31,786 INFO L276 IsEmpty]: Start isEmpty. Operand 3970 states and 5481 transitions. [2023-04-02 06:09:31,791 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2023-04-02 06:09:31,791 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:09:31,791 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 06:09:31,792 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-04-02 06:09:31,792 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 06:09:31,792 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:09:31,793 INFO L85 PathProgramCache]: Analyzing trace with hash 1774889402, now seen corresponding path program 1 times [2023-04-02 06:09:31,793 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:09:31,793 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [740358378] [2023-04-02 06:09:31,793 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:09:31,793 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:09:31,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:09:32,514 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:09:32,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:09:32,556 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 06:09:32,557 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:09:32,557 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [740358378] [2023-04-02 06:09:32,557 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [740358378] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:09:32,557 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:09:32,557 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-04-02 06:09:32,557 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1238069258] [2023-04-02 06:09:32,557 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:09:32,558 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-04-02 06:09:32,558 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:09:32,559 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-04-02 06:09:32,559 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2023-04-02 06:09:32,559 INFO L87 Difference]: Start difference. First operand 3970 states and 5481 transitions. Second operand has 8 states, 7 states have (on average 9.714285714285714) internal successors, (68), 6 states have internal predecessors, (68), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:09:35,827 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:09:35,828 INFO L93 Difference]: Finished difference Result 13640 states and 19364 transitions. [2023-04-02 06:09:35,829 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-04-02 06:09:35,830 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 9.714285714285714) internal successors, (68), 6 states have internal predecessors, (68), 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 71 [2023-04-02 06:09:35,830 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:09:35,878 INFO L225 Difference]: With dead ends: 13640 [2023-04-02 06:09:35,878 INFO L226 Difference]: Without dead ends: 12456 [2023-04-02 06:09:35,887 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=82, Invalid=190, Unknown=0, NotChecked=0, Total=272 [2023-04-02 06:09:35,887 INFO L413 NwaCegarLoop]: 396 mSDtfsCounter, 4948 mSDsluCounter, 642 mSDsCounter, 0 mSdLazyCounter, 1415 mSolverCounterSat, 103 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4948 SdHoareTripleChecker+Valid, 1038 SdHoareTripleChecker+Invalid, 1518 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 103 IncrementalHoareTripleChecker+Valid, 1415 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2023-04-02 06:09:35,888 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4948 Valid, 1038 Invalid, 1518 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [103 Valid, 1415 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2023-04-02 06:09:35,903 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12456 states. [2023-04-02 06:09:36,441 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12456 to 3994. [2023-04-02 06:09:36,449 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3994 states, 3989 states have (on average 1.3812985710704437) internal successors, (5510), 3990 states have internal predecessors, (5510), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:09:36,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3994 states to 3994 states and 5513 transitions. [2023-04-02 06:09:36,458 INFO L78 Accepts]: Start accepts. Automaton has 3994 states and 5513 transitions. Word has length 71 [2023-04-02 06:09:36,459 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:09:36,459 INFO L495 AbstractCegarLoop]: Abstraction has 3994 states and 5513 transitions. [2023-04-02 06:09:36,459 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 9.714285714285714) internal successors, (68), 6 states have internal predecessors, (68), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:09:36,459 INFO L276 IsEmpty]: Start isEmpty. Operand 3994 states and 5513 transitions. [2023-04-02 06:09:36,469 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2023-04-02 06:09:36,469 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:09:36,469 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 06:09:36,469 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-04-02 06:09:36,470 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting mainErr1ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 06:09:36,470 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:09:36,470 INFO L85 PathProgramCache]: Analyzing trace with hash -1903968552, now seen corresponding path program 1 times [2023-04-02 06:09:36,470 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:09:36,470 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1608677846] [2023-04-02 06:09:36,470 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:09:36,471 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:09:36,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:09:37,081 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:09:37,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:09:37,117 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 06:09:37,118 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:09:37,118 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1608677846] [2023-04-02 06:09:37,118 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1608677846] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:09:37,118 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:09:37,118 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-04-02 06:09:37,118 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [211097662] [2023-04-02 06:09:37,118 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:09:37,119 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-04-02 06:09:37,119 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:09:37,119 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-04-02 06:09:37,119 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-04-02 06:09:37,119 INFO L87 Difference]: Start difference. First operand 3994 states and 5513 transitions. Second operand has 6 states, 5 states have (on average 13.6) internal successors, (68), 4 states have internal predecessors, (68), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:09:39,603 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:09:39,603 INFO L93 Difference]: Finished difference Result 9019 states and 12513 transitions. [2023-04-02 06:09:39,604 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-04-02 06:09:39,604 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 13.6) internal successors, (68), 4 states have internal predecessors, (68), 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 71 [2023-04-02 06:09:39,604 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:09:39,617 INFO L225 Difference]: With dead ends: 9019 [2023-04-02 06:09:39,618 INFO L226 Difference]: Without dead ends: 5339 [2023-04-02 06:09:39,625 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2023-04-02 06:09:39,625 INFO L413 NwaCegarLoop]: 399 mSDtfsCounter, 2350 mSDsluCounter, 137 mSDsCounter, 0 mSdLazyCounter, 1009 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2350 SdHoareTripleChecker+Valid, 536 SdHoareTripleChecker+Invalid, 1019 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 1009 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2023-04-02 06:09:39,626 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2350 Valid, 536 Invalid, 1019 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 1009 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2023-04-02 06:09:39,632 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5339 states. [2023-04-02 06:09:40,031 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5339 to 3994. [2023-04-02 06:09:40,038 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3994 states, 3989 states have (on average 1.3765354725495111) internal successors, (5491), 3990 states have internal predecessors, (5491), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:09:40,049 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3994 states to 3994 states and 5494 transitions. [2023-04-02 06:09:40,049 INFO L78 Accepts]: Start accepts. Automaton has 3994 states and 5494 transitions. Word has length 71 [2023-04-02 06:09:40,052 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:09:40,052 INFO L495 AbstractCegarLoop]: Abstraction has 3994 states and 5494 transitions. [2023-04-02 06:09:40,053 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 13.6) internal successors, (68), 4 states have internal predecessors, (68), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:09:40,053 INFO L276 IsEmpty]: Start isEmpty. Operand 3994 states and 5494 transitions. [2023-04-02 06:09:40,087 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2023-04-02 06:09:40,087 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:09:40,087 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 06:09:40,087 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-04-02 06:09:40,088 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 06:09:40,088 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:09:40,088 INFO L85 PathProgramCache]: Analyzing trace with hash 1895085235, now seen corresponding path program 1 times [2023-04-02 06:09:40,088 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:09:40,088 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1754405577] [2023-04-02 06:09:40,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:09:40,089 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:09:40,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:09:40,826 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:09:40,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:09:40,863 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 06:09:40,863 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:09:40,863 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1754405577] [2023-04-02 06:09:40,864 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1754405577] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:09:40,864 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:09:40,864 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-04-02 06:09:40,864 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [182221725] [2023-04-02 06:09:40,864 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:09:40,865 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-04-02 06:09:40,865 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:09:40,866 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-04-02 06:09:40,866 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-04-02 06:09:40,866 INFO L87 Difference]: Start difference. First operand 3994 states and 5494 transitions. Second operand has 6 states, 5 states have (on average 13.8) internal successors, (69), 4 states have internal predecessors, (69), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:09:43,407 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:09:43,408 INFO L93 Difference]: Finished difference Result 8908 states and 12255 transitions. [2023-04-02 06:09:43,408 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-04-02 06:09:43,408 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 13.8) internal successors, (69), 4 states have internal predecessors, (69), 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 72 [2023-04-02 06:09:43,409 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:09:43,421 INFO L225 Difference]: With dead ends: 8908 [2023-04-02 06:09:43,421 INFO L226 Difference]: Without dead ends: 5199 [2023-04-02 06:09:43,429 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2023-04-02 06:09:43,432 INFO L413 NwaCegarLoop]: 365 mSDtfsCounter, 2082 mSDsluCounter, 121 mSDsCounter, 0 mSdLazyCounter, 977 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2082 SdHoareTripleChecker+Valid, 486 SdHoareTripleChecker+Invalid, 1019 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 977 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2023-04-02 06:09:43,432 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2082 Valid, 486 Invalid, 1019 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 977 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2023-04-02 06:09:43,438 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5199 states. [2023-04-02 06:09:44,049 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5199 to 5177. [2023-04-02 06:09:44,059 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5177 states, 5172 states have (on average 1.3611755607115237) internal successors, (7040), 5173 states have internal predecessors, (7040), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:09:44,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5177 states to 5177 states and 7043 transitions. [2023-04-02 06:09:44,070 INFO L78 Accepts]: Start accepts. Automaton has 5177 states and 7043 transitions. Word has length 72 [2023-04-02 06:09:44,070 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:09:44,070 INFO L495 AbstractCegarLoop]: Abstraction has 5177 states and 7043 transitions. [2023-04-02 06:09:44,070 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 13.8) internal successors, (69), 4 states have internal predecessors, (69), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:09:44,070 INFO L276 IsEmpty]: Start isEmpty. Operand 5177 states and 7043 transitions. [2023-04-02 06:09:44,075 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2023-04-02 06:09:44,076 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:09:44,076 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 06:09:44,076 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-04-02 06:09:44,076 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting mainErr1ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 06:09:44,076 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:09:44,077 INFO L85 PathProgramCache]: Analyzing trace with hash -660947907, now seen corresponding path program 1 times [2023-04-02 06:09:44,077 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:09:44,077 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [146098187] [2023-04-02 06:09:44,077 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:09:44,077 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:09:44,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:09:44,761 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:09:44,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:09:44,793 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 06:09:44,794 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:09:44,794 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [146098187] [2023-04-02 06:09:44,794 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [146098187] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:09:44,794 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:09:44,794 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-04-02 06:09:44,794 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1192468198] [2023-04-02 06:09:44,794 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:09:44,795 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-04-02 06:09:44,795 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:09:44,795 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-04-02 06:09:44,795 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2023-04-02 06:09:44,795 INFO L87 Difference]: Start difference. First operand 5177 states and 7043 transitions. Second operand has 8 states, 7 states have (on average 9.857142857142858) internal successors, (69), 6 states have internal predecessors, (69), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:09:49,048 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:09:49,048 INFO L93 Difference]: Finished difference Result 18047 states and 24839 transitions. [2023-04-02 06:09:49,057 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-04-02 06:09:49,057 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 9.857142857142858) internal successors, (69), 6 states have internal predecessors, (69), 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 72 [2023-04-02 06:09:49,057 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:09:49,093 INFO L225 Difference]: With dead ends: 18047 [2023-04-02 06:09:49,094 INFO L226 Difference]: Without dead ends: 15530 [2023-04-02 06:09:49,104 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=82, Invalid=190, Unknown=0, NotChecked=0, Total=272 [2023-04-02 06:09:49,105 INFO L413 NwaCegarLoop]: 404 mSDtfsCounter, 4156 mSDsluCounter, 549 mSDsCounter, 0 mSdLazyCounter, 1237 mSolverCounterSat, 106 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4156 SdHoareTripleChecker+Valid, 953 SdHoareTripleChecker+Invalid, 1343 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 106 IncrementalHoareTripleChecker+Valid, 1237 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2023-04-02 06:09:49,106 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4156 Valid, 953 Invalid, 1343 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [106 Valid, 1237 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2023-04-02 06:09:49,124 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15530 states. [2023-04-02 06:09:49,863 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15530 to 5205. [2023-04-02 06:09:49,870 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5205 states, 5200 states have (on average 1.3607692307692307) internal successors, (7076), 5201 states have internal predecessors, (7076), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:09:49,880 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5205 states to 5205 states and 7079 transitions. [2023-04-02 06:09:49,880 INFO L78 Accepts]: Start accepts. Automaton has 5205 states and 7079 transitions. Word has length 72 [2023-04-02 06:09:49,880 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:09:49,881 INFO L495 AbstractCegarLoop]: Abstraction has 5205 states and 7079 transitions. [2023-04-02 06:09:49,881 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 9.857142857142858) internal successors, (69), 6 states have internal predecessors, (69), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:09:49,882 INFO L276 IsEmpty]: Start isEmpty. Operand 5205 states and 7079 transitions. [2023-04-02 06:09:49,887 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2023-04-02 06:09:49,888 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:09:49,888 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 06:09:49,888 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-04-02 06:09:49,888 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 06:09:49,889 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:09:49,889 INFO L85 PathProgramCache]: Analyzing trace with hash -837901189, now seen corresponding path program 1 times [2023-04-02 06:09:49,889 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:09:49,889 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1287605446] [2023-04-02 06:09:49,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:09:49,889 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:09:49,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:09:50,566 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:09:50,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:09:50,607 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 06:09:50,607 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:09:50,607 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1287605446] [2023-04-02 06:09:50,607 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1287605446] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:09:50,608 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:09:50,608 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-04-02 06:09:50,608 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1582934391] [2023-04-02 06:09:50,608 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:09:50,608 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-04-02 06:09:50,608 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:09:50,609 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-04-02 06:09:50,609 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2023-04-02 06:09:50,609 INFO L87 Difference]: Start difference. First operand 5205 states and 7079 transitions. Second operand has 8 states, 7 states have (on average 10.0) internal successors, (70), 6 states have internal predecessors, (70), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:09:55,946 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:09:55,947 INFO L93 Difference]: Finished difference Result 22123 states and 30852 transitions. [2023-04-02 06:09:55,947 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-04-02 06:09:55,947 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 10.0) internal successors, (70), 6 states have internal predecessors, (70), 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 73 [2023-04-02 06:09:55,947 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:09:55,989 INFO L225 Difference]: With dead ends: 22123 [2023-04-02 06:09:55,989 INFO L226 Difference]: Without dead ends: 19887 [2023-04-02 06:09:56,000 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=82, Invalid=190, Unknown=0, NotChecked=0, Total=272 [2023-04-02 06:09:56,001 INFO L413 NwaCegarLoop]: 395 mSDtfsCounter, 4366 mSDsluCounter, 628 mSDsCounter, 0 mSdLazyCounter, 1339 mSolverCounterSat, 102 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4366 SdHoareTripleChecker+Valid, 1023 SdHoareTripleChecker+Invalid, 1441 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 102 IncrementalHoareTripleChecker+Valid, 1339 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2023-04-02 06:09:56,001 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4366 Valid, 1023 Invalid, 1441 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [102 Valid, 1339 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2023-04-02 06:09:56,021 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19887 states. [2023-04-02 06:09:56,890 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19887 to 5302. [2023-04-02 06:09:56,896 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5302 states, 5297 states have (on average 1.36020388899377) internal successors, (7205), 5298 states have internal predecessors, (7205), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:09:56,905 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5302 states to 5302 states and 7208 transitions. [2023-04-02 06:09:56,905 INFO L78 Accepts]: Start accepts. Automaton has 5302 states and 7208 transitions. Word has length 73 [2023-04-02 06:09:56,905 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:09:56,905 INFO L495 AbstractCegarLoop]: Abstraction has 5302 states and 7208 transitions. [2023-04-02 06:09:56,905 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 10.0) internal successors, (70), 6 states have internal predecessors, (70), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:09:56,906 INFO L276 IsEmpty]: Start isEmpty. Operand 5302 states and 7208 transitions. [2023-04-02 06:09:56,911 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2023-04-02 06:09:56,911 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:09:56,911 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 06:09:56,911 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-04-02 06:09:56,912 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 06:09:56,912 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:09:56,913 INFO L85 PathProgramCache]: Analyzing trace with hash -459079671, now seen corresponding path program 1 times [2023-04-02 06:09:56,913 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:09:56,913 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [561893521] [2023-04-02 06:09:56,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:09:56,913 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:09:56,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:09:57,974 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:09:57,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:09:58,029 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 06:09:58,030 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:09:58,030 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [561893521] [2023-04-02 06:09:58,030 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [561893521] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:09:58,030 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:09:58,031 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-04-02 06:09:58,031 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [216478175] [2023-04-02 06:09:58,031 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:09:58,032 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-04-02 06:09:58,032 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:09:58,033 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-04-02 06:09:58,033 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2023-04-02 06:09:58,033 INFO L87 Difference]: Start difference. First operand 5302 states and 7208 transitions. Second operand has 11 states, 10 states have (on average 7.1) internal successors, (71), 9 states have internal predecessors, (71), 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 06:10:04,872 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:10:04,872 INFO L93 Difference]: Finished difference Result 18364 states and 25283 transitions. [2023-04-02 06:10:04,873 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2023-04-02 06:10:04,873 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 7.1) internal successors, (71), 9 states have internal predecessors, (71), 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 74 [2023-04-02 06:10:04,873 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:10:04,906 INFO L225 Difference]: With dead ends: 18364 [2023-04-02 06:10:04,906 INFO L226 Difference]: Without dead ends: 16719 [2023-04-02 06:10:04,914 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 147 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=209, Invalid=603, Unknown=0, NotChecked=0, Total=812 [2023-04-02 06:10:04,915 INFO L413 NwaCegarLoop]: 566 mSDtfsCounter, 2994 mSDsluCounter, 2115 mSDsCounter, 0 mSdLazyCounter, 3183 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2994 SdHoareTripleChecker+Valid, 2681 SdHoareTripleChecker+Invalid, 3205 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 3183 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2023-04-02 06:10:04,915 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2994 Valid, 2681 Invalid, 3205 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 3183 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2023-04-02 06:10:04,930 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16719 states. [2023-04-02 06:10:05,916 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16719 to 5302. [2023-04-02 06:10:05,922 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5302 states, 5297 states have (on average 1.3598263167830849) internal successors, (7203), 5298 states have internal predecessors, (7203), 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 06:10:05,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5302 states to 5302 states and 7206 transitions. [2023-04-02 06:10:05,933 INFO L78 Accepts]: Start accepts. Automaton has 5302 states and 7206 transitions. Word has length 74 [2023-04-02 06:10:05,933 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:10:05,933 INFO L495 AbstractCegarLoop]: Abstraction has 5302 states and 7206 transitions. [2023-04-02 06:10:05,934 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 7.1) internal successors, (71), 9 states have internal predecessors, (71), 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 06:10:05,934 INFO L276 IsEmpty]: Start isEmpty. Operand 5302 states and 7206 transitions. [2023-04-02 06:10:05,939 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2023-04-02 06:10:05,940 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:10:05,940 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 06:10:05,940 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-04-02 06:10:05,942 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 06:10:05,942 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:10:05,942 INFO L85 PathProgramCache]: Analyzing trace with hash -1072943212, now seen corresponding path program 1 times [2023-04-02 06:10:05,942 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:10:05,942 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [747456920] [2023-04-02 06:10:05,943 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:10:05,943 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:10:05,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:10:06,831 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:10:06,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:10:06,877 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 06:10:06,877 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:10:06,877 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [747456920] [2023-04-02 06:10:06,877 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [747456920] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:10:06,878 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:10:06,878 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-04-02 06:10:06,878 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1159733998] [2023-04-02 06:10:06,878 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:10:06,878 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-04-02 06:10:06,878 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:10:06,879 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-04-02 06:10:06,879 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2023-04-02 06:10:06,879 INFO L87 Difference]: Start difference. First operand 5302 states and 7206 transitions. Second operand has 10 states, 9 states have (on average 7.888888888888889) internal successors, (71), 8 states have internal predecessors, (71), 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 06:10:12,569 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:10:12,569 INFO L93 Difference]: Finished difference Result 16200 states and 22587 transitions. [2023-04-02 06:10:12,570 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-04-02 06:10:12,570 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 7.888888888888889) internal successors, (71), 8 states have internal predecessors, (71), 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 74 [2023-04-02 06:10:12,570 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:10:12,592 INFO L225 Difference]: With dead ends: 16200 [2023-04-02 06:10:12,592 INFO L226 Difference]: Without dead ends: 13112 [2023-04-02 06:10:12,599 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 87 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=156, Invalid=396, Unknown=0, NotChecked=0, Total=552 [2023-04-02 06:10:12,599 INFO L413 NwaCegarLoop]: 479 mSDtfsCounter, 3476 mSDsluCounter, 1449 mSDsCounter, 0 mSdLazyCounter, 2218 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3476 SdHoareTripleChecker+Valid, 1928 SdHoareTripleChecker+Invalid, 2249 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 2218 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2023-04-02 06:10:12,600 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3476 Valid, 1928 Invalid, 2249 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 2218 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2023-04-02 06:10:12,611 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13112 states. [2023-04-02 06:10:13,620 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13112 to 5298. [2023-04-02 06:10:13,627 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5298 states, 5293 states have (on average 1.3593425278669942) internal successors, (7195), 5294 states have internal predecessors, (7195), 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 06:10:13,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5298 states to 5298 states and 7198 transitions. [2023-04-02 06:10:13,639 INFO L78 Accepts]: Start accepts. Automaton has 5298 states and 7198 transitions. Word has length 74 [2023-04-02 06:10:13,640 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:10:13,640 INFO L495 AbstractCegarLoop]: Abstraction has 5298 states and 7198 transitions. [2023-04-02 06:10:13,640 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 7.888888888888889) internal successors, (71), 8 states have internal predecessors, (71), 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 06:10:13,640 INFO L276 IsEmpty]: Start isEmpty. Operand 5298 states and 7198 transitions. [2023-04-02 06:10:13,646 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2023-04-02 06:10:13,647 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:10:13,647 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 06:10:13,647 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-04-02 06:10:13,647 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 06:10:13,648 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:10:13,648 INFO L85 PathProgramCache]: Analyzing trace with hash -127176694, now seen corresponding path program 1 times [2023-04-02 06:10:13,648 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:10:13,648 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [387946547] [2023-04-02 06:10:13,648 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:10:13,648 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:10:13,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:10:14,899 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:10:14,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:10:14,916 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 06:10:14,917 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:10:14,917 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [387946547] [2023-04-02 06:10:14,917 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [387946547] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:10:14,917 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:10:14,917 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2023-04-02 06:10:14,917 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [610095940] [2023-04-02 06:10:14,917 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:10:14,918 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-04-02 06:10:14,918 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:10:14,918 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-04-02 06:10:14,918 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=130, Unknown=0, NotChecked=0, Total=156 [2023-04-02 06:10:14,919 INFO L87 Difference]: Start difference. First operand 5298 states and 7198 transitions. Second operand has 13 states, 13 states have (on average 5.538461538461538) internal successors, (72), 12 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 06:10:23,962 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:10:23,962 INFO L93 Difference]: Finished difference Result 24804 states and 34787 transitions. [2023-04-02 06:10:23,962 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-04-02 06:10:23,963 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 5.538461538461538) internal successors, (72), 12 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 06:10:23,963 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:10:23,995 INFO L225 Difference]: With dead ends: 24804 [2023-04-02 06:10:23,996 INFO L226 Difference]: Without dead ends: 21592 [2023-04-02 06:10:24,004 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 97 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=167, Invalid=535, Unknown=0, NotChecked=0, Total=702 [2023-04-02 06:10:24,004 INFO L413 NwaCegarLoop]: 805 mSDtfsCounter, 4258 mSDsluCounter, 3893 mSDsCounter, 0 mSdLazyCounter, 1729 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4258 SdHoareTripleChecker+Valid, 4698 SdHoareTripleChecker+Invalid, 1759 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 1729 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2023-04-02 06:10:24,005 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4258 Valid, 4698 Invalid, 1759 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 1729 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2023-04-02 06:10:24,026 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21592 states. [2023-04-02 06:10:25,269 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21592 to 5158. [2023-04-02 06:10:25,274 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5158 states, 5153 states have (on average 1.3609547836211915) internal successors, (7013), 5154 states have internal predecessors, (7013), 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 06:10:25,280 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5158 states to 5158 states and 7016 transitions. [2023-04-02 06:10:25,281 INFO L78 Accepts]: Start accepts. Automaton has 5158 states and 7016 transitions. Word has length 75 [2023-04-02 06:10:25,281 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:10:25,281 INFO L495 AbstractCegarLoop]: Abstraction has 5158 states and 7016 transitions. [2023-04-02 06:10:25,281 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 5.538461538461538) internal successors, (72), 12 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 06:10:25,281 INFO L276 IsEmpty]: Start isEmpty. Operand 5158 states and 7016 transitions. [2023-04-02 06:10:25,287 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2023-04-02 06:10:25,287 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:10:25,287 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 06:10:25,287 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-04-02 06:10:25,288 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 06:10:25,288 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:10:25,288 INFO L85 PathProgramCache]: Analyzing trace with hash -430654803, now seen corresponding path program 1 times [2023-04-02 06:10:25,288 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:10:25,288 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1970285071] [2023-04-02 06:10:25,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:10:25,289 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:10:25,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:10:25,884 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:10:25,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:10:25,912 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 06:10:25,913 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:10:25,913 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1970285071] [2023-04-02 06:10:25,913 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1970285071] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:10:25,913 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:10:25,913 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-04-02 06:10:25,913 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [128775793] [2023-04-02 06:10:25,913 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:10:25,913 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-04-02 06:10:25,914 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:10:25,914 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-04-02 06:10:25,914 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2023-04-02 06:10:25,914 INFO L87 Difference]: Start difference. First operand 5158 states and 7016 transitions. Second operand has 8 states, 7 states have (on average 10.285714285714286) internal successors, (72), 6 states have internal predecessors, (72), 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 06:10:33,572 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:10:33,573 INFO L93 Difference]: Finished difference Result 19274 states and 26781 transitions. [2023-04-02 06:10:33,573 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-04-02 06:10:33,573 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 10.285714285714286) internal successors, (72), 6 states have internal predecessors, (72), 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 75 [2023-04-02 06:10:33,573 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:10:33,609 INFO L225 Difference]: With dead ends: 19274 [2023-04-02 06:10:33,610 INFO L226 Difference]: Without dead ends: 17202 [2023-04-02 06:10:33,623 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=82, Invalid=190, Unknown=0, NotChecked=0, Total=272 [2023-04-02 06:10:33,623 INFO L413 NwaCegarLoop]: 425 mSDtfsCounter, 3078 mSDsluCounter, 702 mSDsCounter, 0 mSdLazyCounter, 1574 mSolverCounterSat, 89 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3078 SdHoareTripleChecker+Valid, 1127 SdHoareTripleChecker+Invalid, 1663 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 89 IncrementalHoareTripleChecker+Valid, 1574 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2023-04-02 06:10:33,624 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3078 Valid, 1127 Invalid, 1663 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [89 Valid, 1574 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2023-04-02 06:10:33,640 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17202 states. [2023-04-02 06:10:35,142 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17202 to 5229. [2023-04-02 06:10:35,146 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5229 states, 5224 states have (on average 1.3614088820826953) internal successors, (7112), 5225 states have internal predecessors, (7112), 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 06:10:35,152 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5229 states to 5229 states and 7115 transitions. [2023-04-02 06:10:35,152 INFO L78 Accepts]: Start accepts. Automaton has 5229 states and 7115 transitions. Word has length 75 [2023-04-02 06:10:35,153 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:10:35,153 INFO L495 AbstractCegarLoop]: Abstraction has 5229 states and 7115 transitions. [2023-04-02 06:10:35,153 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 10.285714285714286) internal successors, (72), 6 states have internal predecessors, (72), 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 06:10:35,153 INFO L276 IsEmpty]: Start isEmpty. Operand 5229 states and 7115 transitions. [2023-04-02 06:10:35,158 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2023-04-02 06:10:35,158 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:10:35,159 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 06:10:35,159 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-04-02 06:10:35,159 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting mainErr1ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 06:10:35,159 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:10:35,159 INFO L85 PathProgramCache]: Analyzing trace with hash -1942956542, now seen corresponding path program 1 times [2023-04-02 06:10:35,160 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:10:35,160 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [564071140] [2023-04-02 06:10:35,160 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:10:35,160 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:10:35,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:10:36,009 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:10:36,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:10:36,049 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 06:10:36,050 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:10:36,050 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [564071140] [2023-04-02 06:10:36,050 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [564071140] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:10:36,050 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:10:36,050 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-04-02 06:10:36,051 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1502503817] [2023-04-02 06:10:36,051 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:10:36,051 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-04-02 06:10:36,051 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:10:36,052 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-04-02 06:10:36,052 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2023-04-02 06:10:36,052 INFO L87 Difference]: Start difference. First operand 5229 states and 7115 transitions. Second operand has 10 states, 9 states have (on average 8.0) internal successors, (72), 8 states have internal predecessors, (72), 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 06:10:42,952 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:10:42,952 INFO L93 Difference]: Finished difference Result 16220 states and 22640 transitions. [2023-04-02 06:10:42,952 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-04-02 06:10:42,953 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 8.0) internal successors, (72), 8 states have internal predecessors, (72), 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 75 [2023-04-02 06:10:42,953 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:10:42,971 INFO L225 Difference]: With dead ends: 16220 [2023-04-02 06:10:42,972 INFO L226 Difference]: Without dead ends: 13090 [2023-04-02 06:10:42,977 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 87 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=156, Invalid=396, Unknown=0, NotChecked=0, Total=552 [2023-04-02 06:10:42,978 INFO L413 NwaCegarLoop]: 458 mSDtfsCounter, 3458 mSDsluCounter, 1326 mSDsCounter, 0 mSdLazyCounter, 2012 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3458 SdHoareTripleChecker+Valid, 1784 SdHoareTripleChecker+Invalid, 2047 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 2012 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2023-04-02 06:10:42,978 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3458 Valid, 1784 Invalid, 2047 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 2012 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2023-04-02 06:10:42,987 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13090 states. [2023-04-02 06:10:44,513 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13090 to 5205. [2023-04-02 06:10:44,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5205 states, 5200 states have (on average 1.3601923076923077) internal successors, (7073), 5201 states have internal predecessors, (7073), 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 06:10:44,531 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5205 states to 5205 states and 7076 transitions. [2023-04-02 06:10:44,531 INFO L78 Accepts]: Start accepts. Automaton has 5205 states and 7076 transitions. Word has length 75 [2023-04-02 06:10:44,532 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:10:44,532 INFO L495 AbstractCegarLoop]: Abstraction has 5205 states and 7076 transitions. [2023-04-02 06:10:44,532 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 8.0) internal successors, (72), 8 states have internal predecessors, (72), 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 06:10:44,532 INFO L276 IsEmpty]: Start isEmpty. Operand 5205 states and 7076 transitions. [2023-04-02 06:10:44,539 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2023-04-02 06:10:44,539 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:10:44,539 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 06:10:44,540 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-04-02 06:10:44,540 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 06:10:44,540 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:10:44,540 INFO L85 PathProgramCache]: Analyzing trace with hash 765635493, now seen corresponding path program 1 times [2023-04-02 06:10:44,540 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:10:44,541 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1784030049] [2023-04-02 06:10:44,541 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:10:44,541 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:10:44,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:10:45,692 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:10:45,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:10:45,709 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 06:10:45,709 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:10:45,709 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1784030049] [2023-04-02 06:10:45,710 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1784030049] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:10:45,710 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:10:45,710 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2023-04-02 06:10:45,710 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1778726299] [2023-04-02 06:10:45,710 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:10:45,710 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-04-02 06:10:45,710 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:10:45,711 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-04-02 06:10:45,711 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2023-04-02 06:10:45,711 INFO L87 Difference]: Start difference. First operand 5205 states and 7076 transitions. Second operand has 13 states, 13 states have (on average 5.538461538461538) internal successors, (72), 12 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 06:10:56,920 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:10:56,920 INFO L93 Difference]: Finished difference Result 24242 states and 34104 transitions. [2023-04-02 06:10:56,920 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-04-02 06:10:56,920 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 5.538461538461538) internal successors, (72), 12 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 06:10:56,921 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:10:56,952 INFO L225 Difference]: With dead ends: 24242 [2023-04-02 06:10:56,953 INFO L226 Difference]: Without dead ends: 21136 [2023-04-02 06:10:56,961 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 104 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=165, Invalid=537, Unknown=0, NotChecked=0, Total=702 [2023-04-02 06:10:56,962 INFO L413 NwaCegarLoop]: 774 mSDtfsCounter, 3549 mSDsluCounter, 3694 mSDsCounter, 0 mSdLazyCounter, 1691 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3549 SdHoareTripleChecker+Valid, 4468 SdHoareTripleChecker+Invalid, 1730 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 1691 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2023-04-02 06:10:56,962 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3549 Valid, 4468 Invalid, 1730 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 1691 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2023-04-02 06:10:56,977 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21136 states. [2023-04-02 06:10:58,578 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21136 to 5179. [2023-04-02 06:10:58,582 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5179 states, 5174 states have (on average 1.3600695786625434) internal successors, (7037), 5175 states have internal predecessors, (7037), 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 06:10:58,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5179 states to 5179 states and 7040 transitions. [2023-04-02 06:10:58,587 INFO L78 Accepts]: Start accepts. Automaton has 5179 states and 7040 transitions. Word has length 75 [2023-04-02 06:10:58,588 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:10:58,588 INFO L495 AbstractCegarLoop]: Abstraction has 5179 states and 7040 transitions. [2023-04-02 06:10:58,588 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 5.538461538461538) internal successors, (72), 12 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 06:10:58,588 INFO L276 IsEmpty]: Start isEmpty. Operand 5179 states and 7040 transitions. [2023-04-02 06:10:58,591 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2023-04-02 06:10:58,592 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:10:58,592 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 06:10:58,592 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-04-02 06:10:58,592 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 06:10:58,592 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:10:58,592 INFO L85 PathProgramCache]: Analyzing trace with hash 2145865836, now seen corresponding path program 1 times [2023-04-02 06:10:58,592 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:10:58,593 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1478671399] [2023-04-02 06:10:58,593 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:10:58,593 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:10:58,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:10:59,241 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:10:59,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:10:59,273 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 06:10:59,273 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:10:59,273 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1478671399] [2023-04-02 06:10:59,274 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1478671399] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:10:59,274 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:10:59,274 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-04-02 06:10:59,274 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2045567454] [2023-04-02 06:10:59,274 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:10:59,274 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-04-02 06:10:59,275 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:10:59,275 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-04-02 06:10:59,275 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2023-04-02 06:10:59,275 INFO L87 Difference]: Start difference. First operand 5179 states and 7040 transitions. Second operand has 8 states, 7 states have (on average 10.428571428571429) internal successors, (73), 6 states have internal predecessors, (73), 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 06:11:08,956 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:11:08,956 INFO L93 Difference]: Finished difference Result 21776 states and 30422 transitions. [2023-04-02 06:11:08,956 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-04-02 06:11:08,957 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 10.428571428571429) internal successors, (73), 6 states have internal predecessors, (73), 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 76 [2023-04-02 06:11:08,957 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:11:08,983 INFO L225 Difference]: With dead ends: 21776 [2023-04-02 06:11:08,983 INFO L226 Difference]: Without dead ends: 19658 [2023-04-02 06:11:08,990 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=82, Invalid=190, Unknown=0, NotChecked=0, Total=272 [2023-04-02 06:11:08,990 INFO L413 NwaCegarLoop]: 431 mSDtfsCounter, 3236 mSDsluCounter, 709 mSDsCounter, 0 mSdLazyCounter, 1503 mSolverCounterSat, 86 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3236 SdHoareTripleChecker+Valid, 1140 SdHoareTripleChecker+Invalid, 1589 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 86 IncrementalHoareTripleChecker+Valid, 1503 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2023-04-02 06:11:08,990 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3236 Valid, 1140 Invalid, 1589 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [86 Valid, 1503 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2023-04-02 06:11:09,004 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19658 states. [2023-04-02 06:11:10,690 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19658 to 5209. [2023-04-02 06:11:10,695 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5209 states, 5204 states have (on average 1.3599154496541122) internal successors, (7077), 5205 states have internal predecessors, (7077), 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 06:11:10,703 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5209 states to 5209 states and 7080 transitions. [2023-04-02 06:11:10,703 INFO L78 Accepts]: Start accepts. Automaton has 5209 states and 7080 transitions. Word has length 76 [2023-04-02 06:11:10,704 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:11:10,704 INFO L495 AbstractCegarLoop]: Abstraction has 5209 states and 7080 transitions. [2023-04-02 06:11:10,704 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 10.428571428571429) internal successors, (73), 6 states have internal predecessors, (73), 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 06:11:10,704 INFO L276 IsEmpty]: Start isEmpty. Operand 5209 states and 7080 transitions. [2023-04-02 06:11:10,710 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2023-04-02 06:11:10,710 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:11:10,710 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 06:11:10,710 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-04-02 06:11:10,710 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 06:11:10,710 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:11:10,711 INFO L85 PathProgramCache]: Analyzing trace with hash 74462669, now seen corresponding path program 1 times [2023-04-02 06:11:10,711 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:11:10,711 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1064653217] [2023-04-02 06:11:10,711 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:11:10,711 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:11:10,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:11:11,513 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:11:11,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:11:11,550 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 06:11:11,550 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:11:11,550 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1064653217] [2023-04-02 06:11:11,550 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1064653217] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:11:11,550 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:11:11,550 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-04-02 06:11:11,550 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1885803372] [2023-04-02 06:11:11,551 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:11:11,551 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-04-02 06:11:11,551 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:11:11,552 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-04-02 06:11:11,552 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2023-04-02 06:11:11,552 INFO L87 Difference]: Start difference. First operand 5209 states and 7080 transitions. Second operand has 11 states, 10 states have (on average 7.3) internal successors, (73), 9 states have internal predecessors, (73), 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 06:11:22,539 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:11:22,540 INFO L93 Difference]: Finished difference Result 21775 states and 30408 transitions. [2023-04-02 06:11:22,540 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-04-02 06:11:22,540 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 7.3) internal successors, (73), 9 states have internal predecessors, (73), 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 76 [2023-04-02 06:11:22,541 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:11:22,569 INFO L225 Difference]: With dead ends: 21775 [2023-04-02 06:11:22,569 INFO L226 Difference]: Without dead ends: 18433 [2023-04-02 06:11:22,577 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 106 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=185, Invalid=517, Unknown=0, NotChecked=0, Total=702 [2023-04-02 06:11:22,577 INFO L413 NwaCegarLoop]: 528 mSDtfsCounter, 4138 mSDsluCounter, 1814 mSDsCounter, 0 mSdLazyCounter, 2341 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4138 SdHoareTripleChecker+Valid, 2342 SdHoareTripleChecker+Invalid, 2370 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 2341 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2023-04-02 06:11:22,578 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4138 Valid, 2342 Invalid, 2370 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 2341 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2023-04-02 06:11:22,589 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18433 states. [2023-04-02 06:11:24,365 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18433 to 5072. [2023-04-02 06:11:24,369 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5072 states, 5067 states have (on average 1.3595816064732584) internal successors, (6889), 5068 states have internal predecessors, (6889), 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 06:11:24,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5072 states to 5072 states and 6892 transitions. [2023-04-02 06:11:24,375 INFO L78 Accepts]: Start accepts. Automaton has 5072 states and 6892 transitions. Word has length 76 [2023-04-02 06:11:24,376 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:11:24,376 INFO L495 AbstractCegarLoop]: Abstraction has 5072 states and 6892 transitions. [2023-04-02 06:11:24,376 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 7.3) internal successors, (73), 9 states have internal predecessors, (73), 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 06:11:24,376 INFO L276 IsEmpty]: Start isEmpty. Operand 5072 states and 6892 transitions. [2023-04-02 06:11:24,380 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2023-04-02 06:11:24,380 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:11:24,380 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 06:11:24,380 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-04-02 06:11:24,380 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 06:11:24,381 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:11:24,381 INFO L85 PathProgramCache]: Analyzing trace with hash 117232580, now seen corresponding path program 1 times [2023-04-02 06:11:24,381 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:11:24,381 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1159214768] [2023-04-02 06:11:24,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:11:24,381 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:11:24,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:11:24,942 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:11:24,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:11:25,023 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 06:11:25,024 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:11:25,024 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1159214768] [2023-04-02 06:11:25,024 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1159214768] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:11:25,024 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:11:25,024 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-04-02 06:11:25,024 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1865382098] [2023-04-02 06:11:25,024 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:11:25,025 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-04-02 06:11:25,025 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:11:25,026 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-04-02 06:11:25,026 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2023-04-02 06:11:25,026 INFO L87 Difference]: Start difference. First operand 5072 states and 6892 transitions. Second operand has 8 states, 7 states have (on average 10.428571428571429) internal successors, (73), 6 states have internal predecessors, (73), 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 06:11:35,260 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:11:35,261 INFO L93 Difference]: Finished difference Result 19083 states and 26521 transitions. [2023-04-02 06:11:35,261 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-04-02 06:11:35,261 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 10.428571428571429) internal successors, (73), 6 states have internal predecessors, (73), 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 76 [2023-04-02 06:11:35,261 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:11:35,286 INFO L225 Difference]: With dead ends: 19083 [2023-04-02 06:11:35,286 INFO L226 Difference]: Without dead ends: 17023 [2023-04-02 06:11:35,293 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=82, Invalid=190, Unknown=0, NotChecked=0, Total=272 [2023-04-02 06:11:35,294 INFO L413 NwaCegarLoop]: 420 mSDtfsCounter, 3025 mSDsluCounter, 698 mSDsCounter, 0 mSdLazyCounter, 1536 mSolverCounterSat, 84 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3025 SdHoareTripleChecker+Valid, 1118 SdHoareTripleChecker+Invalid, 1620 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 84 IncrementalHoareTripleChecker+Valid, 1536 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2023-04-02 06:11:35,294 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3025 Valid, 1118 Invalid, 1620 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [84 Valid, 1536 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2023-04-02 06:11:35,308 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17023 states. [2023-04-02 06:11:37,273 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17023 to 5115. [2023-04-02 06:11:37,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5115 states, 5110 states have (on average 1.360078277886497) internal successors, (6950), 5111 states have internal predecessors, (6950), 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 06:11:37,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5115 states to 5115 states and 6953 transitions. [2023-04-02 06:11:37,285 INFO L78 Accepts]: Start accepts. Automaton has 5115 states and 6953 transitions. Word has length 76 [2023-04-02 06:11:37,285 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:11:37,285 INFO L495 AbstractCegarLoop]: Abstraction has 5115 states and 6953 transitions. [2023-04-02 06:11:37,285 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 10.428571428571429) internal successors, (73), 6 states have internal predecessors, (73), 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 06:11:37,285 INFO L276 IsEmpty]: Start isEmpty. Operand 5115 states and 6953 transitions. [2023-04-02 06:11:37,289 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2023-04-02 06:11:37,289 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:11:37,289 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 06:11:37,290 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2023-04-02 06:11:37,290 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting mainErr1ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 06:11:37,290 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:11:37,290 INFO L85 PathProgramCache]: Analyzing trace with hash 751654931, now seen corresponding path program 1 times [2023-04-02 06:11:37,290 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:11:37,290 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [842457399] [2023-04-02 06:11:37,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:11:37,291 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:11:37,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:11:38,394 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:11:38,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:11:38,410 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 06:11:38,410 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:11:38,410 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [842457399] [2023-04-02 06:11:38,410 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [842457399] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:11:38,410 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:11:38,410 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2023-04-02 06:11:38,410 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1729568625] [2023-04-02 06:11:38,410 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:11:38,411 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-04-02 06:11:38,411 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:11:38,411 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-04-02 06:11:38,412 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2023-04-02 06:11:38,412 INFO L87 Difference]: Start difference. First operand 5115 states and 6953 transitions. Second operand has 14 states, 14 states have (on average 5.214285714285714) internal successors, (73), 13 states have internal predecessors, (73), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:11:55,721 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:11:55,721 INFO L93 Difference]: Finished difference Result 27760 states and 39013 transitions. [2023-04-02 06:11:55,722 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-04-02 06:11:55,722 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 5.214285714285714) internal successors, (73), 13 states have internal predecessors, (73), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 76 [2023-04-02 06:11:55,722 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:11:55,763 INFO L225 Difference]: With dead ends: 27760 [2023-04-02 06:11:55,763 INFO L226 Difference]: Without dead ends: 24593 [2023-04-02 06:11:55,772 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 98 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=179, Invalid=577, Unknown=0, NotChecked=0, Total=756 [2023-04-02 06:11:55,773 INFO L413 NwaCegarLoop]: 878 mSDtfsCounter, 4449 mSDsluCounter, 4224 mSDsCounter, 0 mSdLazyCounter, 1578 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4449 SdHoareTripleChecker+Valid, 5102 SdHoareTripleChecker+Invalid, 1613 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 1578 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2023-04-02 06:11:55,774 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4449 Valid, 5102 Invalid, 1613 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 1578 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2023-04-02 06:11:55,790 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24593 states. [2023-04-02 06:11:58,173 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24593 to 5028. [2023-04-02 06:11:58,232 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5028 states, 5024 states have (on average 1.357484076433121) internal successors, (6820), 5024 states have internal predecessors, (6820), 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 06:11:58,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5028 states to 5028 states and 6823 transitions. [2023-04-02 06:11:58,239 INFO L78 Accepts]: Start accepts. Automaton has 5028 states and 6823 transitions. Word has length 76 [2023-04-02 06:11:58,239 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:11:58,239 INFO L495 AbstractCegarLoop]: Abstraction has 5028 states and 6823 transitions. [2023-04-02 06:11:58,239 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 5.214285714285714) internal successors, (73), 13 states have internal predecessors, (73), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:11:58,239 INFO L276 IsEmpty]: Start isEmpty. Operand 5028 states and 6823 transitions. [2023-04-02 06:11:58,243 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2023-04-02 06:11:58,243 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:11:58,244 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 06:11:58,244 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2023-04-02 06:11:58,244 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 06:11:58,244 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:11:58,244 INFO L85 PathProgramCache]: Analyzing trace with hash -39256791, now seen corresponding path program 1 times [2023-04-02 06:11:58,245 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:11:58,245 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1984474770] [2023-04-02 06:11:58,245 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:11:58,245 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:11:58,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:11:59,295 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:11:59,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:11:59,308 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 06:11:59,308 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:11:59,308 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1984474770] [2023-04-02 06:11:59,308 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1984474770] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:11:59,308 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:11:59,308 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2023-04-02 06:11:59,309 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1894033032] [2023-04-02 06:11:59,309 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:11:59,309 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-04-02 06:11:59,309 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:11:59,310 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-04-02 06:11:59,310 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2023-04-02 06:11:59,310 INFO L87 Difference]: Start difference. First operand 5028 states and 6823 transitions. Second operand has 13 states, 13 states have (on average 5.6923076923076925) internal successors, (74), 12 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 06:12:13,805 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:12:13,806 INFO L93 Difference]: Finished difference Result 18842 states and 26235 transitions. [2023-04-02 06:12:13,807 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-04-02 06:12:13,808 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 5.6923076923076925) internal successors, (74), 12 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 06:12:13,808 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:12:13,829 INFO L225 Difference]: With dead ends: 18842 [2023-04-02 06:12:13,829 INFO L226 Difference]: Without dead ends: 16764 [2023-04-02 06:12:13,834 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 92 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=188, Invalid=514, Unknown=0, NotChecked=0, Total=702 [2023-04-02 06:12:13,835 INFO L413 NwaCegarLoop]: 698 mSDtfsCounter, 3413 mSDsluCounter, 3369 mSDsCounter, 0 mSdLazyCounter, 1930 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3413 SdHoareTripleChecker+Valid, 4067 SdHoareTripleChecker+Invalid, 1941 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 1930 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2023-04-02 06:12:13,835 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3413 Valid, 4067 Invalid, 1941 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 1930 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2023-04-02 06:12:13,845 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16764 states. [2023-04-02 06:12:16,448 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16764 to 5019. [2023-04-02 06:12:16,452 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5019 states, 5015 states have (on average 1.3575274177467598) internal successors, (6808), 5015 states have internal predecessors, (6808), 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 06:12:16,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5019 states to 5019 states and 6811 transitions. [2023-04-02 06:12:16,458 INFO L78 Accepts]: Start accepts. Automaton has 5019 states and 6811 transitions. Word has length 77 [2023-04-02 06:12:16,459 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:12:16,459 INFO L495 AbstractCegarLoop]: Abstraction has 5019 states and 6811 transitions. [2023-04-02 06:12:16,459 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 5.6923076923076925) internal successors, (74), 12 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 06:12:16,459 INFO L276 IsEmpty]: Start isEmpty. Operand 5019 states and 6811 transitions. [2023-04-02 06:12:16,465 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2023-04-02 06:12:16,465 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:12:16,465 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 06:12:16,466 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2023-04-02 06:12:16,466 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 06:12:16,466 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:12:16,466 INFO L85 PathProgramCache]: Analyzing trace with hash -270644087, now seen corresponding path program 1 times [2023-04-02 06:12:16,466 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:12:16,466 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1158515594] [2023-04-02 06:12:16,467 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:12:16,467 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:12:16,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:12:17,223 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:12:17,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:12:17,258 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 06:12:17,259 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:12:17,259 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1158515594] [2023-04-02 06:12:17,259 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1158515594] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:12:17,259 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:12:17,259 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-04-02 06:12:17,259 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1836663790] [2023-04-02 06:12:17,259 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:12:17,260 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-04-02 06:12:17,260 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:12:17,260 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-04-02 06:12:17,261 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2023-04-02 06:12:17,261 INFO L87 Difference]: Start difference. First operand 5019 states and 6811 transitions. Second operand has 11 states, 10 states have (on average 7.4) internal successors, (74), 9 states have internal predecessors, (74), 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 06:12:33,158 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:12:33,158 INFO L93 Difference]: Finished difference Result 21815 states and 30270 transitions. [2023-04-02 06:12:33,158 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2023-04-02 06:12:33,159 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 7.4) internal successors, (74), 9 states have internal predecessors, (74), 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 77 [2023-04-02 06:12:33,159 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:12:33,185 INFO L225 Difference]: With dead ends: 21815 [2023-04-02 06:12:33,185 INFO L226 Difference]: Without dead ends: 18557 [2023-04-02 06:12:33,194 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 150 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=227, Invalid=643, Unknown=0, NotChecked=0, Total=870 [2023-04-02 06:12:33,195 INFO L413 NwaCegarLoop]: 531 mSDtfsCounter, 3549 mSDsluCounter, 1963 mSDsCounter, 0 mSdLazyCounter, 2937 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3549 SdHoareTripleChecker+Valid, 2494 SdHoareTripleChecker+Invalid, 2959 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 2937 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2023-04-02 06:12:33,195 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3549 Valid, 2494 Invalid, 2959 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 2937 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2023-04-02 06:12:33,207 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18557 states. [2023-04-02 06:12:36,060 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18557 to 5019. [2023-04-02 06:12:36,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5019 states, 5015 states have (on average 1.3571286141575274) internal successors, (6806), 5015 states have internal predecessors, (6806), 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 06:12:36,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5019 states to 5019 states and 6809 transitions. [2023-04-02 06:12:36,071 INFO L78 Accepts]: Start accepts. Automaton has 5019 states and 6809 transitions. Word has length 77 [2023-04-02 06:12:36,071 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:12:36,071 INFO L495 AbstractCegarLoop]: Abstraction has 5019 states and 6809 transitions. [2023-04-02 06:12:36,071 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 7.4) internal successors, (74), 9 states have internal predecessors, (74), 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 06:12:36,071 INFO L276 IsEmpty]: Start isEmpty. Operand 5019 states and 6809 transitions. [2023-04-02 06:12:36,075 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2023-04-02 06:12:36,075 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:12:36,076 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 06:12:36,076 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2023-04-02 06:12:36,076 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 06:12:36,076 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:12:36,076 INFO L85 PathProgramCache]: Analyzing trace with hash 1385323852, now seen corresponding path program 1 times [2023-04-02 06:12:36,077 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:12:36,077 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1741239527] [2023-04-02 06:12:36,077 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:12:36,077 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:12:36,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:12:36,556 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:12:36,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:12:36,568 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 06:12:36,568 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:12:36,568 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1741239527] [2023-04-02 06:12:36,568 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1741239527] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:12:36,568 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:12:36,568 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-04-02 06:12:36,568 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [951231811] [2023-04-02 06:12:36,569 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:12:36,569 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-04-02 06:12:36,569 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:12:36,569 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-04-02 06:12:36,569 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-04-02 06:12:36,570 INFO L87 Difference]: Start difference. First operand 5019 states and 6809 transitions. Second operand has 4 states, 4 states have (on average 18.75) internal successors, (75), 3 states have internal predecessors, (75), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:12:40,785 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:12:40,785 INFO L93 Difference]: Finished difference Result 6829 states and 9294 transitions. [2023-04-02 06:12:40,786 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-04-02 06:12:40,786 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 18.75) internal successors, (75), 3 states have internal predecessors, (75), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 78 [2023-04-02 06:12:40,787 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:12:40,793 INFO L225 Difference]: With dead ends: 6829 [2023-04-02 06:12:40,793 INFO L226 Difference]: Without dead ends: 4886 [2023-04-02 06:12:40,798 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-04-02 06:12:40,803 INFO L413 NwaCegarLoop]: 691 mSDtfsCounter, 357 mSDsluCounter, 320 mSDsCounter, 0 mSdLazyCounter, 704 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 357 SdHoareTripleChecker+Valid, 1011 SdHoareTripleChecker+Invalid, 707 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 704 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2023-04-02 06:12:40,803 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [357 Valid, 1011 Invalid, 707 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 704 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2023-04-02 06:12:40,807 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4886 states. [2023-04-02 06:12:43,463 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4886 to 4884. [2023-04-02 06:12:43,468 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4884 states, 4880 states have (on average 1.342622950819672) internal successors, (6552), 4880 states have internal predecessors, (6552), 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 06:12:43,474 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4884 states to 4884 states and 6555 transitions. [2023-04-02 06:12:43,474 INFO L78 Accepts]: Start accepts. Automaton has 4884 states and 6555 transitions. Word has length 78 [2023-04-02 06:12:43,475 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:12:43,475 INFO L495 AbstractCegarLoop]: Abstraction has 4884 states and 6555 transitions. [2023-04-02 06:12:43,475 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.75) internal successors, (75), 3 states have internal predecessors, (75), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:12:43,475 INFO L276 IsEmpty]: Start isEmpty. Operand 4884 states and 6555 transitions. [2023-04-02 06:12:43,480 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2023-04-02 06:12:43,480 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:12:43,480 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 06:12:43,480 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2023-04-02 06:12:43,480 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 06:12:43,481 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:12:43,481 INFO L85 PathProgramCache]: Analyzing trace with hash -1034823623, now seen corresponding path program 1 times [2023-04-02 06:12:43,481 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:12:43,481 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [507019441] [2023-04-02 06:12:43,481 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:12:43,481 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:12:43,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:12:43,938 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:12:43,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:12:43,951 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 06:12:43,952 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:12:43,952 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [507019441] [2023-04-02 06:12:43,952 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [507019441] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:12:43,952 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:12:43,952 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-04-02 06:12:43,952 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [960554811] [2023-04-02 06:12:43,952 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:12:43,953 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-04-02 06:12:43,953 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:12:43,953 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-04-02 06:12:43,953 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-04-02 06:12:43,954 INFO L87 Difference]: Start difference. First operand 4884 states and 6555 transitions. Second operand has 4 states, 4 states have (on average 18.75) internal successors, (75), 3 states have internal predecessors, (75), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:12:48,263 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:12:48,263 INFO L93 Difference]: Finished difference Result 7247 states and 9813 transitions. [2023-04-02 06:12:48,264 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-04-02 06:12:48,264 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 18.75) internal successors, (75), 3 states have internal predecessors, (75), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 78 [2023-04-02 06:12:48,264 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:12:48,270 INFO L225 Difference]: With dead ends: 7247 [2023-04-02 06:12:48,270 INFO L226 Difference]: Without dead ends: 4886 [2023-04-02 06:12:48,273 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-04-02 06:12:48,273 INFO L413 NwaCegarLoop]: 735 mSDtfsCounter, 340 mSDsluCounter, 499 mSDsCounter, 0 mSdLazyCounter, 752 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 340 SdHoareTripleChecker+Valid, 1234 SdHoareTripleChecker+Invalid, 757 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 752 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2023-04-02 06:12:48,274 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [340 Valid, 1234 Invalid, 757 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 752 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2023-04-02 06:12:48,277 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4886 states. [2023-04-02 06:12:51,001 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4886 to 4884. [2023-04-02 06:12:51,006 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4884 states, 4880 states have (on average 1.332377049180328) internal successors, (6502), 4880 states have internal predecessors, (6502), 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 06:12:51,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4884 states to 4884 states and 6505 transitions. [2023-04-02 06:12:51,013 INFO L78 Accepts]: Start accepts. Automaton has 4884 states and 6505 transitions. Word has length 78 [2023-04-02 06:12:51,013 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:12:51,013 INFO L495 AbstractCegarLoop]: Abstraction has 4884 states and 6505 transitions. [2023-04-02 06:12:51,014 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.75) internal successors, (75), 3 states have internal predecessors, (75), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:12:51,014 INFO L276 IsEmpty]: Start isEmpty. Operand 4884 states and 6505 transitions. [2023-04-02 06:12:51,019 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2023-04-02 06:12:51,019 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:12:51,019 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 06:12:51,020 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2023-04-02 06:12:51,020 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 06:12:51,020 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:12:51,020 INFO L85 PathProgramCache]: Analyzing trace with hash 1262748870, now seen corresponding path program 1 times [2023-04-02 06:12:51,020 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:12:51,020 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [175966545] [2023-04-02 06:12:51,020 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:12:51,021 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:12:51,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:12:51,501 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:12:51,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:12:51,515 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 06:12:51,515 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:12:51,515 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [175966545] [2023-04-02 06:12:51,515 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [175966545] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:12:51,515 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:12:51,515 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-04-02 06:12:51,515 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2045921834] [2023-04-02 06:12:51,516 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:12:51,516 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-04-02 06:12:51,516 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:12:51,516 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-04-02 06:12:51,517 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-04-02 06:12:51,517 INFO L87 Difference]: Start difference. First operand 4884 states and 6505 transitions. Second operand has 4 states, 4 states have (on average 19.0) internal successors, (76), 3 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)